Start a new thread

1 to 11 of 11 replies

I have the new greenhouse on the way and am now wanting to plan for the sowing season next spring. I have a stockpile of certain seeds such as delphinium, geum, calendula, lupin, aquilegia, silene and have recently bought some Nemesia to try (don't know if this will give seed?).

Does anyone have any recommendations for something that would be quite different to those above and relatively successful to propagate?  Grateful for any suggestions.


I would like some ideas for my new greenhouse in the Sping also. Looking to grow some unusual small annuals for the gaps in my borders

Foxgloves (got about 5 types as well as plants already started this year) are very easy and nice plants, others i will be trying from seed will be antirrhinum, various lobelia, larkspur. i also did some very late dahlias from seed which where a mixed type and i was very impressed with vast array or different plants, so will probably try another seed mix of those.

Oh and cornflowers, had some of these in a wildflower mix, so will grow these by themselves next year.

I'm going to give cleomes a go next year - having seen pictures on here earlier in the summer. Rudbeckias and echinaceas work well for me ( although echinaceas don't flower til the following summer). Have also had success with scabious and salvias ( the perennial ones - transylvatica i think they are called). I love growing things from seed - makes me feel like a "real" gardener

AJK, that aquilegia will germinate more reliably if you sow it in a cold GH or outside in the winter. I sowed all mine on new year's day this year, Very successful. A lot of hardy perennials need a chill before they germinate. Most Ranunculacaea and Apiaceae in particular. 

If you want to try some more cold ones astrantias are easy sowed cold now.

No hardy perennial NEEDS heat. There are some that will germinate quicker with heat but to balance that there are some that will never germinate if they have heat.

If you want seeds that will be what you started off with you need species, not F1s or those with their names in inverted commas.  For those you need to divide or take cuttings. There's some useful info on here.


hollie hock

I've been collecting seed this year, corncockles give a lot of seeds and morning glory plants. Been collecting off echinecias, rudebekkias and cornflowers. Having a go at collecting seeds of cleomes as well. Foxgloves are always good

Thanks people!

I like the look of those cleomes - are these easy enough and when should they be sown?

hollie hock

I've grown cleomes for the first time this year, I think I sowed them late spring/early summer,can't really remember now. I found them surprisingly easy to grow and once up they were really strong seedlings/plants. They did really well , watch out for their prickly spines

I've grown Ammi this year. The seedlings are very fragile but they grow to 3ft or more.

also Heliptermum Piorrot. it's a  straw flower. they both germinate very quickly

You could try growing Chinese lanterns, Physalis. They have lovely orange lanterns and seeds inside which are revealed when the lantern starts to degrade over winter. I am planning to grow some from seed in jan/feb aswell.


Try tropical plants. They germinate fast in a greenhouse and you will have something less pedestrian than Lupins and delphiniums.

I do recommend Peter White's shop as I have had a good germination rate and I think he has a sale on:

Sign up or log in to post a reply