Tag Archive for: Growing Helleborus from seeds

This is yet another subject that I have written about here and there; time to have all info in one place for the Germination page.

First, to emphasize again that all Helleborus are great additions to the garden: cold-hardy, reliable flowering, most are drought resistant, a variety of flower colors, evergreen foliage, plus long lived. Quite an impressive list, isn’t it?! Ah, forgot to say that they are rabbit proof, which is very important for many of us.

Considering perennial plants in general, the most ‘perennial’ among them are the Helleborus and garden peonies.  It happens that they are also the most ‘worry free’ plants when planted in the right location; coincidence?!

Back to the seeds: they mature around mid-June and belong to the category ‘catch them if you can’. Even if you walk around the garden every day, they can still take you by surprise, reason why it is best to use organza bags for capture.

Some will still ‘escape’, fall on the ground and by next spring you will be presented with many ‘baby’ Hellebore seedlings. I missed to collect the seeds from the large, purple Helleborus last year and this spring there was a carpet of seedlings underneath it! Luckily, that I found an adopting parent for them :) otherwise they would have been wasted.

This is just to emphasize that Helleborus seeds germinate easily and in high percentage – when sown at the right time!  i.e. in the summer (or fall depending on the region/country you live in).

Reason for this is that Helleborus is a member of the Ranunculaceae family (like Hepatica, Aconitum…).
All these species share the same seed characteristic: when the seeds are ripe, the embryos are immature. Germination can happen only after the embryos reach a mature stage, requiring specific temperature cycles, usually a sequence of warm/cold moist periods.

Direct sowing
We imitate nature with this well- known sowing method:  work in a fresh layer of good soil mix in the area where you want to sow (close to other plants or you can have a special garden bed for sowings), press the seeds in the soil, add a bit more soil on top and water well. That’s it.

Considering that during the summer we cannot count on rain too often, you will have to water the sowing area, otherwise do not expect any germination!

Somewhere in the spring the seedlings appear. Grow them in place for one season or more (depending on space), then move them to the desired location. They can also be transplanted at a very early stage (cotyledon stage) if needed; I did it many times and it works well.

Sowing in pots

If you have just a few seeds it is best to maximize your chances and sow in pots.
Sow the seeds like for any other species (I only recommend using a bit taller pots), and keep the pots in part-shaded or shaded location; water as needed and protect from critters. For the winter, either place the pots in a cold frame, or ‘plant’ them in the ground – an easy method for ‘winter storage’ about which we discussed many times.

Over the years I sowed various Helleborus seeds until September and they have germinated well in the spring. It means that the warm/moist period from September-late fall was long enough for the seeds requirement (embryo growth); followed afterwards by the cold/moist period (winter). Of course that this will vary depending on your location/region and where you keep the pots. In some cases sowing the seeds even later in the fall may be OK. In most parts of Canada by early November winter can arrive, reason why sowing later than September may not be a good decision.

Buying/Receiving seeds from seeds exchanges in ‘out of sowing optimal time’.
Choices are:
– Sow in pots and be patient, allowing them to naturally undergo the warm/cold periods required for germination; it may take 2+ years and certainly the germination won’t be 100%.
– Begin controlled stratification in moist vermiculite/bags: first a warm period of about  2 months (room temperature is OK) then place the bags in the fridge and keep an eye for the germination.

Yes, when grown from seeds most Helleborus cultivars or species will not all come true to the mother-plants, but the fast flowering allows selecting the best specimens, not to mention the very nice surprises that often wait for us!
They do delight us with their flowers in the spring and seem to remain in flower forever, but I really appreciate the most their foliage, so I will end the post with a picture of Helleborus purpurascens ex. Carpathian Mts. taken this month and the pot of seeds starting to germinate in 2015 (
a bit of topsoil was removed to ‘see’ the seeds germinating). They turned out really nice!

With most of the Hepatica seeds ‘out of the way’ (thank you!), we are preparing for the next wave of seeds that are best sown during the summer to ensure proper germination.

These are the Helleborus, maybe a new species this year -Pachyphragma macrophyllum, plus various native species like Sanguinaria canadensis, Asarum canadense, Erythronium grandiflorum and Jeffersonia diphylla.
All these species mature their seeds in mid to late June, and will be offered right away. I should also add to this group Pulsatilla styriaca, which in my experience also germinates best when sown fresh.

A short garden survey revealed seed pods on Helleborus ‘Cherry Blossoms’, Helleborus caucasicus, Helleborus purpurascens, Helleborus foetidus and few others H. x hybridus. Helleborus are easy to grow from seeds and start flowering in 3-4 years, your only worry will be having too many seedlings (not to mention the price of a potted plant at the garden centers nowadays!).

Stay tuned…

From the flowering front, two nice surprises: Castilleja coccinea (Indian paintbrush) is flowering for first time in the garden (seeds were sown ‘in situ’), in sync with those in the wild. Sisyrinchium mucronatum (Needle tip blue eyed grass) is no surprise, but it has a nice flowering this year, and makes a nice pair with Castilleja just like in nature.

The second flowering surprise is Delphinium nudicaule, the orange or canyon larkspur, hailing from the foothills and canyons of Sierra Nevada! Yes, it is possible. The seeds were offered in 2019, I probably sowed them in 2020/21, and here it is, flowering to the delight of the resident hummingbird and not only.
We only need to dare to grow plants from seeds!

Delphinium nudicaule flowering in June, 2023, SW Ontario

 

Greetings to all and welcome to the busiest and most beautiful time of the year: SPRING!
We have waited, waited some more, we have prepared and now we don’t know what to start doing first.

For us seeds growers the priorities are: transplanting and acclimating the indoor seedlings AND  – yes, sowing more seeds!

Phacelia sericea, Ipomopsis rubra, Dianthus deltoides and other seedlings acclimating outdoors

Plus, keep an eye on the fall/winter sowings because many species will start to germinate at this time (newly germinated: Eremogone capillaris, Delphinium andersonii, Hepatica, Corydalis, Erythronium….)

Someone wrote to me once that he couldn’t buy certain warm germinating species because he doesn’t have indoor lights :-)

People have been growing plants from seeds long before the indoor lighting systems came into being!
Maybe there is this wrong perception because most plant addicts use them to pleasantly pass the winter time and get a jump on growing.

Otherwise, the time to normally sow the fast, easy germinating species in Northern Hemisphere is right now! Sow the seeds in pots outdoors and they will germinate with the raise in temperatures; or sow indoors and put the pots outside after the seeds have germinated (keep them protected from heavy rains, usually the space underneath the house’s eaves is a good place).

Also, various species, especially annuals and those resenting transplanting can be ‘direct’ sown in the ground. I have just sowed the other day a few more Papaver species (which are short lived) and sprinkled some Sedum atratum seeds in the rockery.

The Seeds Shop is open offering plenty of species that do not need a cold period for germination: Acinos, Draba, Dianthus, Gypsophila, Edraianthus, Silene, Papaver….to mention just a few. Watch for few new species in the Seeds List, like Rhodiola rhodantha, Silene turgida and Phacelia sericea. Just sow and watch them grow!

Also, the Lilium and Paeonia sections have been updated with the remaining seeds in stock (best to be sown in July/August when the Shop may be closed for fall Seeds List preparation).

In truth, the sowing never ends…in between, we stop to admire the result of our work :) with an emphasis on Helleborus, all seeds-growns!

 * Fresh Helleborus seeds are provided every year, when possible. When sown during the summer (in August-Sept. at the latest), they will promptly germinate in the next spring. Your only worry will be what to do with so many seedlings!

 

It is easier with a little help ;) It would be a pity to miss the seeds from this beauty, don’t you think?

Helleborus x hybridus ‘Cherry Blossom’

This is a gorgeous anemone center specimen from the Cherry Blossom seeds strain; not all seedlings will come entirely true from seeds of course but all other possible forms to obtain are very enticing!

Self- pollinated, or with a bit of help from this one – not bad either, eh?

In my experience Helleborus seeds can be safely sowed asap or until mid August in order to germinate in the spring after a cold period. When sowed in late fall/winter they will germinate in the second year (warm/cold cycles required for germination).
Alternatively, controlled warm/cold periods can be provided in the house.

Seeds will be available soon!

The first Helleborus plants grown from seeds are set to flower this spring; knowing the ‘parents’ I cannot help having great expectations.

Helleborus x hybridus, grown from seeds of double red parents

I started to grow Helleborus from seeds just by accident really – read about the beginning in Helleborus journeying. Considering their high price on the market, it is something worth to grow yourself, especially when more than one plant is desired. And who can stop at one Helleborus?

Helleborus purpurascens grown from wild collected seeds (photo last fall) – it doesn’t seem it will flower this year but starting to look very much like its parents (see photos in the wild in Helleborus journeying)

Just like with the Epimediums, when growing Helleborus from seeds of open pollinated plants you should expect endless flower variations and many nice surprises along the way.
Not so nice surprises are also possible of course – that’s when the compost pile comes in handy ;)

There are more young plants in the pipeline: seedlings of anemone center parents (my favourites) including from H. Cherry Blossoms, various picotee forms, H. argutifolius, and the youngest of all – H. caucasicus (emerging seedlings in the featured image).

A most satisfying journey, indeed.