Sow on the surface of a good free draining seed compost from late winter to early spring. Make sure the compost is moist but not wet and seal in a polythene bag until after germination which usually takes 10-20 days at 21C (70F). Do not exclude light which is beneficial to germination.
Transplant when large enough to handle and grow on in cooler conditions. Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost 60cm (24in) apart in sun or part shade on rich well drained soil.
Caution: Irritant to skin and eyes. Harmful if eaten.
Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above.
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Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.
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By Mark Toogood 17-08-2013
Everything the previous review is true. But for those new to this species, you have to appreciate how large they can get in a warm summer such as 2013.
I raised mine from seed and planted the pot-ons out mid-bed in June. I then went away for a month or so. On return I had a solid mass of 6' high spikes some of the leaves must have been 2'x1'. Brilliant, but my Rudbeckia, Echiniacea, Verbena, etc -hardly diminutive spp - were part-shaded out! If in full sun and fertile soil I recommend N. sylvestris is planted toward the back of large beds.
Well worth sowing
By Peter Humphrey 25-07-2011
A mass germination,so many friends benefitted,pricked out to many seeds trays.I plant them a little closer than recommended as I found last year that they support one another,they have huge leaves so watch out for slugs and snails hiding.Here we are in mid July and they have begun to flower.I almost feel like sitting in the flower borders as the scent is beautiful .Not too heady but it makes growing these all the more worthwhile.
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