It was hot today (felt like 38C!) and I noticed the delicate Rock harlequin (Capnoides sempervirens) flowering. I must say, the colours are just perfect to describe such a fiery day!

Capnoides sempervirens

Capnoides sempervirens

It was sown successively from late winter to spring and older seedlings are the first to start flowering now; a few are still growing up. The key to success with this biennial Corydalis (and also some of the perennials) is to plant it in different spots of the garden and, fingers crossed it will reseed and take care of itself afterwards.

If someone noticed, I call it first Corydalis and then I wrote it as Capnoides. Corydalis spp. used to bear the same name. And then, as it happens, few names have changed. I always hesitate: should I write the older name or the ‘new’ one. Many people will always call them Corydalis (and so do I, privately ;)

To resolve the situation, I made a new category for the seeds shop – Corydalis & all, where they can live happily together…

In preparation of going away for a little while, I looked around today to see who would remain in charge of the garden and the seedlings…The first ones asked found excuses of being busy flowering, setting seeds, or putting up new growth.

So, I had to appoint by force the lord of the garden – Corydalis nobilis. You will hardly find a more reliable, resilient and fair garden fellow. From its corner location it can easily survey the whole garden, including the youngster Cory (from seed) which is flowering for the first time.

Corydalis nobilis

Corydalis nobilis

I read somewhere (most probably in an AGS Journal) about an old, neglected garden where C. nobilis had taken hold of and was growing everywhere like a weed. It can maybe happen in time; say 30 years from now on.
Sounds like a good plan…

And a few May pictures: new and older plants establishing together, Aquilegia canadensis- short form in the sun-rockery (in the making), and… lots of seedlings :) On to the seed adventures at full steam!

I am known to be on the lookout for promising ballerinas (see Arisaema and Primula –rina)… This year my eyes were drawn by the Carolina allspice seedlings. Surely there is great promise; I just don’t know if in the ballet because after the first stage the twirled cotyledons have rapidly put on some weight ;) but there are other genres to try out…

The belle of the ball in the germinatrix: Calycanthus floridus seedlings with convoluted cotyledons (which are rarely seen in other species):

Calycanthus floridus seedlings

Calycanthus floridus convoluted cotyledons

Calycanthus floridus with first true leaves

Calycanthus floridus seedlings with the first true leaves

This is an excerpt from the shop about Carolina allspice and I have nothing else to add:
“Calycanthus floridus is a deciduous shrub with glossy, aromatic foliage that can grow to about 3-4 m high, and the same or more in width. Remarkable when in flower; it has fragrant, red-wine coloured, and many petaled flowers that look a bit like Magnolia flowers; very attractive for pollinators too.
It is a very adaptable shrub that can grow from sun to shade, in almost any type of soil, and is very resistant to pests. A really trouble-free shrub for any garden; on my list of ‘to do it for myself”…

Done!

Calycanthus floridus seeds - nicked and soaked before to sowing

Calycanthus floridus seeds – nicked and soaked prior to sowing

Say cheese!

Arisaema triphyllum seedlings

Arisaema triphyllum seedlings

My morning routine of checking the germinatrix revealed that all Arisaema seedlings (triphyllum, flavum and consanguineum) will be 1 month-old tomorrow (counting since sowing). Time goes by so fast!

I said it before but better to repeat – start Arisaema as early as you can, water plenty and they will have an extended season of growth (i.e. bigger tubers). This way, they can start flowering in the third year.

Note: all species mentioned are fast, warm germinators.

The lights were ‘fired up’ for a few impatient germinators and I started to sow more of the warm germinators. When it’s cold and drab outside there is really no other better thing than sowing and placing the little pots under the lights! I wasn’t thinking of sowing more Arisaema this year (I swear!), but as it happens I got a fairly large seed stock from someone :), and since I have plans for a little colony of this lovely Arisaema flavum, why wait?

A. flavum is not as impressive as other Arisaema spp. but it has a certain charm when the little yellow flowers are peeking from between the nice shoe-shaped leaves. Variable as height and spathe colour, it has female and male flowers on the same plant, and thus the red fruit will extend the garden décor into the fall. A. flavum ssp. abbreviatum is not recognized anymore as a subspecies, but there is a new one – ssp. tibeticum J. Murata. Most often the spathe colour is pure yellow or yellow with brown streakings.

Arisaema flavum

Arisaema flavum

No less important is the fact that it is one of the few ‘foreign’ Arisaema reliable for our climate. Its large native distribution, from W. Himalaya, S. Tibet and W. China to Afghanistan and Yemen, shows how adaptable is. It is certainly an alpine Arisaema, found growing wild in sunny, open places from 1700m to 3000 m altitude.

It germinates fairly quickly, and like most Arisaema sp. I tried, if started early, it puts up a nice growth under the lights, and you will obtain bigger/flowering tubers in a shorter period of time. Mature tubers also offset well, so it is easy to keep it going and even share it with friends.

Arisaema flavum seeds

Arisaema flavum seeds

The more we grow from seeds, the more interesting forms for the garden!

Note: I also sowed some of our native A. triphyllum to keep it company :)

A short interruption from the thistles to draw a bit of attention to the purple bloom maple (more often called Korean maple). This small tree is native to Manchuria, Korea and around Vladivostok/Russia, where it grows on rocky forested slopes. In the gardens it is best grown in full sun to light shaded locations.

Acer pseudosieboldianum is one of the very few safe options for colder climates (to zone 4) to enjoy the look-alike of a graceful Japanese maple and the brilliant fall foliage (usually red, but also orange-yellow).

Acer pseudosieboldianum

Acer pseudosieboldianum fall coloration

It is very similar to the Japanese A. sieboldianum (another rarely seen maple), both having a nice layered habit; however, the purple bloom maple has hairy new growth and purple flowers. If you live in a colder area or know someone who does, give a try to this wonderful, hardy species. Also suitable for bonsai forming, which means that with skillful pruning, one could ‘create’ nice forms for the rockery and small gardens.

A few cold/moist stored seeds (nutlets actually) are available in the shop; some will be ready to germinate with the spring arrival, some may take their time, be patient…

Click on this LINK to see a spectacular specimen of Acer pseudosieboldianum, and as well A. sieboldianum and quite few others Japanese maples (from Wespelaar Arboretum, Antwerp – Belgium).

Centaurs – Greek mythological figures with a man’s upper body and a horse’s lower half. Supposedly, they were using the (Centaurea) flowers for healing (Centaurea scabiosa as header image)

Continuing the year of the thistle with Centaurea spp., which are not true thistles of course, but included in the big family. Actually, there are a few species with a true thistle-like look! Again, leaving the weedy ones apart, there are many worth cultivating besides the common C. nigra, C. montana and variants. ALL Centaurea species are most valuable to bees and attract countless species of butterfly, moths and other insects AND they are easy to grow from seeds!

In many cases, the involucral bracts (phyllaries) are very ornamental, a detail sometimes overlooked but which serves in species identification. Below, a few Centaurea sp. from the Carpathian Mts. (some endemic, some with a wider distribution). Bright pictures for a cloudy day!

Centaurea kotschyana

Centaurea kotschyana

Centaurea kotschyana

Centaurea pseudophrygia

Centaurea pseudophrygia

Centaurea pseudophrygia

Centaurea triumfettii ssp. stricta

Centaurea triumfettii ssp. stricta

Centaurea triumfettii ssp. stricta

And how about the yellow-flowered Centaurea? Here is the rare yellow form of C. kotschyana:

Centaurea kotschyana yellow form

Centaurea kotschyana yellow form

Two species in the Newly arrived Seeds category: C. salonitana and C. orientalis also have yellow flowers, but there are many other species. And I think the dwarf Centaurea drabifolia (endemic of Turkey!), seen here in the Rock garden at the Montreal Botanic Garden, can very well conclude this short post on Centaurea.

Centaurea drabifolia

Centaurea drabifolia

I hope I convinced at least a few to pay more attention to Centaureas. I look forward to combine in our garden, the yellow Centaurea salonitana together with Salvia pratensis in a flower bed, while the smaller Centaurea triumfettii ssp. stricta will be attracting butterflies in the rockery area ;)

You can also see the Carpathian Mts. endemic Centaurea pinnatifida here.

The beginning of the New Year has been busy with new seeds arrivals. Having a new garden space means also having new plants interests. Therefore, I declare 2016 as The Year of the Thistle!

According to wiki, “Thistle is the common name of a group of flowering plants characterized by leaves with sharp prickles on the margins, mostly in the family Asteraceae”. But besides the ‘true thistles’: Cirsium, Carduus and Onopordum, other genera that don’t have spiny leaves are also included and called thistles: Jurinea, Centaurea, Carthamus, Carlina, Rhaponticum, Echinops, Silybum, Berkheya and so on.

Few plants are more beneficial to bees, bumblebees and butterflies than thistles; also, many birds are consuming their seeds. Quite a few are cultivated as economical/medicinal plants. The oldest cultivated ‘thistle’ in the world was Carthamus tinctorius (safflower).

Unfortunately the name ‘thistle’ brings to mind mostly awful weeds. However, there are many species that are non-invasive and highly ornamental; some are even endangered in their wild habitat! To name only 2 North American Cirsium species that are not weedy and have become endangered: the endemic Cirsium hillii (C. pumilum var. hillii) – seen in the image, and C. pitcheri. Cultivated in the gardens but not too often is Cirsium canum (Queen Anne’s Thistle).

A most interesting genus is Jurinea. These are species familiar mostly to plant collectors; the genus includes alpine/sub-alpine species growing in mountain meadows, a few rare and/or endemics. In the image is shown Jurinea mollis growing in a sub-alpine meadow in the Carpathian Mts.

Jurinea mollis in Carpathian Mts.

Jurinea mollis in the Carpathian Mts.

Other great species practically unknown in cultivation are Jurinea iljinii – with a restricted distribution range in the western part of the Greater Caucasus, and Jurinea sordida endemic in Crimea. They all have in common, non-spiny, finely lobed leaves and purple (in various shades) flower heads, which take on a beautiful silky appearance when the seeds are ripened.

Jurinea mollis seedhead

Jurinea mollis seedhead

There are also nice, low-growing Jurinea ssp. for the rock garden (if you can find seeds) like J. depressa and J. macrocephala, to name just a couple. From the low-growing thistles category, I will have to contend for now with the alpine thistle: Carlina acaulis. You can read more about it here.

Carlina acaulis

Carlina acaulis

To be continued…

Thistles gallery

‘Tis the season this year meant ‘enjoy the mild weather as long as possible’. A recent escapade into the woods inspired me to do more sowing in moss. Last year I sowed Saxifraga cuneifolia and Gaultheria procumbens, just for play and it worked very well; now I need more Saxifraga seedlings.
I cannot really replicate this boulder, but if this Saxifraga likes to grow and spread on moss, it makes sense to sow it like that, right? Nature is best source of inspiration.

Saxifraga cuneifolia ssp. robusta in wild habitat

Saxifraga cuneifolia ssp. robusta in wild habitat (Carpathian Mts.)

Of course I don’t have a big, mossy boulder, but I am creative – an old decorative clay pot looks good ornate in moss.

For sowing on moss:
Prepare a pot, mossy stone…, your moss pieces and potting mix (best to add some sand to it);
Place the moss pieces you gathered, press well, water;
Spread the seeds on top, water again;
Enclose the pot/stone in a Ziploc bag, or cover just the top;
Overwinter outside; in the spring start opening the Ziploc or remove the plastic cover.

The seedlings will be tiny (see in the images below taken last summer) and remain like that for some time, so keep it in a shaded spot and mist once in a while. A smaller pot can be kept in the Ziploc but watch it closely as the moss can overgrow the tiny seedlings (this can be rectified by trimming it). It depends on what type of moss is used.

Another Saxifraga that would enjoy this sowing/growing would be the North American Saxifraga virginica (correctly said Micranthes virginiensis).

Saxifraga virginica (Micranthes virginiensis)

Micranthes virginiensis (syn. Saxifraga virginica) in habitat

It is a fun sowing method and in the worst case scenario you will end up with a nice, green, mossy pot! It can be used for other shade loving species, particularly those that like a bit of acidic substrate like Vaccinium, Pieris, Rhododendron…Also it is a great way to germinate and grow any species which like a permanently moist substrate like Viola macloskeyi, Cornus canadensis and probably quite a few others.

Viola macloskeyi

Viola macloskeyi on a mossy hump in wild habitat – Why try to grow it in a different way?!

May the Green Inspiration follow you all throughout the New Year!

Update: Saxifraga cuneifolia spp. robusta (seedlings grown in moss) 5 years later :-)

More seed adventures as I enter a new territory – that of the hemi-parasitic plants. Many beautiful and garden desirable species belong to this category, some not impossible to grow from seeds, most notably Castilleja spp. and Pedicularis spp. (Orobanchaceae, formerly Scrophulariaceae).
By coincidence, just after I collected a few Castilleja coccinea seeds, someone asked me if I would be interested in hemi-parasitic plants. And so, I got the chance to exchange it for Pedicularis oederi seeds ;)

Pedicularis oederi, Oeder’s lousewort, is an alpine species found in China, Japan, Russia, C and N. Europe (very rare in the Carpathian Mts.), and North America. Like many other Pedicularis spp., it has beautiful ferny looking foliage and it flowers for a very long time, producing yellow/crimson tipped flowers.

Pedicularis oederi

Pedicularis oederi – growing in the Carpathian Mts. at aprox. 2000 m alt.

Another Pedicularis that I am dreaming to grow one day is Pedicularis verticillata – whorled lousewort or Bumblebee flower, with whorled inflorescences of rich, purple-pink flowers. It grows in alpine tundra turf and rocky slopes from Japan, Russia, arctic C, N, and S Europe to NW America.

Pedicularis verticillata

Pedicularis verticillata with Bistorta vivipara in the Carpathian Mts.

An alpine meadow with Pedicularis verticillata in flower it is a sight to behold.

Pedicularis verticillata2

The good news is that most hemi-parasitic plants have a wide range of hosts and have been shown to germinate even without their presence. Various Pedicularis are parasitic on species of Poaceae, Ericaceae, Salix, Aster; but many others species have been also cited as hosts. Most notably, a study done on Bartsia alpina and Pedicularis lapponica found that both would form haustorial connections with Pinguicula vulgaris (Lentibulariaceae).

One method that is working somehow for these plants, involves the direct sowing outdoors – if you have something looking like a natural meadow, which I don’t. For my experiment, I split the P. oederi seeds in 4 portions. Even if I am not successful, I am sure I will learn something from it.

– Seeds sown by a gardening friend outdoors in the vicinity of an Erica plant.
– Seeds sown at our place, outdoors in the vicinity of Polygonum affine and Deschampsia caespitosa.
– Seeds sown together with Pinguicula vulgaris in a pot that will undergo cold/stratification outside over the winter.
– Few remaining seeds will be sown together with Carex grayi (a nice NA native sedge that can grow in full sun).

But there are many other wonderful Pedicularis out there! The excitement of a new territory…

Update 2016: I wasn’t succesful with any of the above,yet. Sometimes it takes 2 years for seeds to germinate so the ones in pots are not a lost cause. The ones sown in situ probably have been disturbed by the squirrels. More sowings have been done, this time only in pots in pieces of turf. One has to persevere :)

Being seed adventurous doesn’t mean only going into the woods and climbing mountains in search of plant seeds. It also means, trying new species from seeds and looking to improve or find new methods of sowing/germination. Wanting to avoid having to handle too many small pots, last week I sowed in the same container a few species with similar requirements (germination/growing conditions) in rectangular wood-fiber container, which was ‘planted’ in the ground in a shaded location (but it could also be kept like other pots outdoors and planted in an appropriate place only in the spring).

Species with hydrophilic seeds sown together

Container with Trillium sp., Uvularia grandiflora, Clintonia borealis…Anti-squirrel mesh and owl for good luck :)

I planted a second container with Caulophyllum thalictroides in combination with Medeola virginiana. But, one could also use individual biodegradable pots if the mixing of species is not desired.

By the time the plants will be big enough to be moved/spaced out (if necessary), the container will be decomposed. This way the seeds and seedlings will have the advantage of a good water retentive sowing mix; of course, not all of them will survive, but this is how it also goes in a natural setting. This may be turn out to be a very good method for growing those species that need two years (or more) to complete germination and have similar growing requirements, like Trillium, Uvularia, Maianthemum racemosum, Polygonatum…and also for those species that have very tiny seedlings and don’t require transplanting until the second or third year.

And to give one more idea, the featured image shows Caulophyllum thalictroides seeds sowed directed on the woodland garden floor – but this will be a whole story for later…


 

C. lutea - November

Only a short note for this month’s end because I think Corydalis lutea (syn. Pseudofumaria lutea) deserves a special mention.
Transplanted during the summer in a crowded container where it lived for quite a while, made the trip to a new place, was dug & planted in the ground, not only it flowered continuously and provided food for pollinators and quite a few seeds, but it is still in flower today (featured image), after the last weekend’s temperature low of -9˚C (with snow cover).

It has shown up from seeds by itself in the spring, like it often happens, but I think it is a bit special. More of its seeds have been spread around today, so the ‘blood’ of this warrior’ will perpetuate in the new garden :)

C. lutea -July

Corydalis lutea in container, July

mid November

In the garden last week…

Part I

Suddenly it got cold and we have had the first snow; not unexpected for this time of year. Not the same I can say about the Hepatica americana seeds I found germinated, with their radicles quite extended! This is most interesting because Hepatica species have immature embryos at the time of collecting (May-June) and need periods of warm and then cold for embryo development before germinating.

Hepatica americana - germinated seeds without cold period

Hepatica americana – germinated seeds without cold period

This year I have been careful to collect and keep separate a few Hepaticas forms that I am personally interested in. All the germinated seeds belong to a collection made in 30 May from a plant with intermediate characters between americana and acutiloba (although the saying goes hybrids do not exist between these two). None of the other Hepatica collections are germinating and I sowed quite a few already.

Speaking of which, this is an excellent time to start sowing many species that need to undergo a cold/moist period to germinate, ideally outdoors – in our climate, the natural temperature fluctuations are the best to break the dormancy of many species.
If someone needs a bit of help, here’s what I do, plain and simple:

  • Have ready a few pots; sowing mix, labels; fill the pots 3/4, tap the mix lightly. Sow, label, top up with grit, small gravel or vermiculite (I used vermiculite only because I have a gigantic bag of it).

  • Place the pots in a shallow container and add water so they’ll absorb water through capillarity.

  • If you have only few pots, enclose them in a Ziploc bag and ‘hide’ it in a shaded position; you don’t really need a shed or frame; cover with leaves or a piece of cloth, and then the snow will act as insulation. A garden bench/chair can be easily used as ‘pots keeping’ location.

  • If you went all the way and have a whole tray, no worry- wrap it up in a sheet plastic/garbage bag, and ‘hide it’ as well in a shaded position. Early spring, start checking inside the Ziplocs/unwrap the plastic, and move the pots in a half sun location; eventually add a mesh on top to protect from critters.

  • Don’t forget to watch for the first signs of germination!!!

I’ll be back as more warm/cold games and sowing practices unfold…

Herb Paris, True lover’s Knot, Devil-in-a-bush

Renown of being hard to germinate because it requires several warm/cold cycles to break dormancy, Paris is often avoided by many people when it comes to growing it from seeds. A couple of days ago, during a check-up of the moist stored seeds, I had a big surprise. Almost all the garden collected seeds (in late summer) were already germinated! These seeds were cleaned and placed in moist vermiculite right away – an advantage of the garden collecting. Seeds that I collected in the wild and couldn’t place right away in moist storage look good but still haven’t decided to germinate.

Unless a magic trick is involved (not unusual at this time of year), cleaning the seeds after the berries are ripen and putting them right away in a bag with slightly moist vermiculite, which is the same as sowing them fresh, works very well for Paris quadrifolia.

Paris quadrifolia germinated seeds

Paris quadrifolia germinated seeds

Paris quadrifolia is a Trillium relative from moist deciduous forests of Europe and W. Asia, with a symmetric ‘constitution’ (Paris from Latin pars – equal). The four whorled leaves are topped up in early spring by a solitary, interesting flower with thread-like petals and a crown of golden stamens, followed by a deep blue berry (poisonous).

Paris quadrifolia

Paris quadrifolia

In medieval times this particular symmetry had Paris quadrifolia considered the ‘herb of equality’ and it was used in marriage rituals and as a guard against witches. It was also associated with medicine in medieval English tradition, being mentioned in Gerard’s Herbal as an antidote to toxic substances like arsenic and mercury.

According to other herbalists of the time, the black berries were also effective as a remedy for those who had lost their minds through bewitchment, or as an antidote for mental confusion due to supernatural causes :) (today it remains employed only in homeopathy).

In conclusion, for now we are safe from witches but if in the future we are to get confused, we shall use a few Paris berries…(which need “ to be administered in unequal numbers” :)))

Update: I have serious doubts now that this is R. tibetica (or bhutanica) and although I had intentions I won’t add to the general confusion by offering seeds. I am waiting for other opinions regarding its identity (maybe R. australis?)…..probably it will be a looong wait.

Yesterday morning I had the wonderful surprise to find Roscoea (tibetica) in ‘labour’. The capsule was just starting to split open showing the seeds. The smallest of the genus, R. tibetica has a particular way of developing the capsule at soil level (easy to miss it), inside the stem actually, and I thought it would be interesting to show it, especially because this is also the final confirmation of its identity.

Roscoea tibetica capsule

Roscoea (tibetica) showing split capsule

Roscoea species have arilate seeds, so if ants are around (or earwigs) it’s wise not to miss the ‘delivery’. A bit of help is needed to extract the seeds without the stem being destroyed – a clean, small cut, followed by a bandage application (cheesecloth works perfectly) to secure the leftover seeds (the flowers open in succession so not all the seeds mature at the same time).

Size, shape and arils are good characters for Roscoea ID, especially considering that there is quite a bit of confusion going around – R. tibetica has seeds with deeply lacerate arils.

I presented Roscoea tibetica in the Little plants series; this year grew better in part-shade, sharing a container with A. fargesii seedlings. This is a great little Roscoea for the rock garden. Easy to grow from seeds, it can be quite variable; the form shown in the featured image has small purple flowers barely showing from among the stems, so one cannot really call it a showy plant. More than this, it starts growing sometimes in June, it flowers in late June, and by mid-August the seeds are ripen – ‘living in the fast lane’!

One for collectors and people in love with ‘little plants’ :)

Good read on Roscoea: The Genus Roscoea – Jill Cowley, RBG Kew, 2007. Speaking of which, reading again about R. tibetica and R. bhutanica, it seems that my plant fits more likely with the later: “Leaf blades usually 2-6 at flowering time, slightly auriculate… Inflorescence enclosed in leaf sheats. Flowers opening just above leaves, one open at a time…..Seed aril shallowly lacerate.”

Happy to hear other opinion…

Yesterday I spent quite some time into the darkness of the garage, doing archaeological plant-digging in containers. I was looking after various creatures that like to spend the winter dry and need to be unearthed by late April and be brought back to life (if possible).
A large earth octopus almost jumped out of a pot! Luckily it proved out to be a gentle one. I checked its legs one by one, all seemed to be fine; eyes wide open and smiling. It was carefully placed in fresh, rich potting mix as it likes it, free to swim and have fun.

Roscoea auriculata 2

The earth octopus (Roscoea auriculata)

I’ll wait with the water until it starts growing a bit (it’s an earth octopus with rhizomatous fleshy tentacles after all). Somewhere in mid-summer a strange phenomenon will happen: the earth octopus will bloom!

Roscoea auriculata flower
There were also a few baby octopuses (not completely developed, some have only 2-3 tentacles), all fine looking and ready to start earth swimming. Roscoeas are very pleasant plants to grow from seeds; it will take 3+ years for the first flowers to appear.

Roscoea auriculata it is a hardy ginger from Nepal, Sikkim and Bhutan, where it grows in grasslands at 2400-2700 m altitude. As the name suggests, it has consistently auriculate (eared) leaves on the pseudostem. The height can be variable 20-40 cm and the flowers are large, in various shades of purple to deep violet or even white. It can be mistaken with R. purpurea but it flowers a bit earlier and the flowers have usually white upper staminodes and a strongly down-facing labellum.