Regular seeds (unchilled or unrefrigerated) will need to have their pots set outdoors and exposed to cold, freezing temperatures for at least a month, preferably two. Just sow and set the pots or trays under grow lights just as you might begin tomatoes indoors. If you purchased prechilled seed (such as the Jelitto Gold Nugget Seed ®), germination will be rapid without refrigeration. Seeds should be sown in winter (January or early February) and lightly covered with 1/16 inch of something like canary or chicken grit, which will help in reducing moss growth and will still allow some light in. Photo: Matt Mattus Sowing seeds and cold treatment Oxlips have wider, flatter flowers that stand up straight rather than nod. These are often available as pure species, or as colorful cultivars in many forms. denticulata, Zones 3–8), and common primroses ( P. elatior, Zones 4–8), drumstick primroses ( P. However, if you’ve never grown primroses before, I suggest beginning with four species and their various named selections, as they all share similar cultural techniques. auricula, Zones 3–8), I would advise you to find young plants at an alpine nursery (such as Wrightman Alpines) and follow cultural directions available from the American Primrose Society. For example, if you want to grow the fancy bear’s ear primrose ( P. The genus Primula is large with 450 species, it should come as no surprise that many are challenging to grow. veris ‘Sunset Shades’, Zones 5–8) swaps the plain yellow of the straight species’ flowers for a tie-dye explosion of red, orange, and yellow. Still, some of the finest seeds come from a few mail-order seed companies such as Barnhaven Primroses and Jelitto Seed.
I get my seed from plant society seed exchanges such as the ones offered by the North American Rock Garden Society or the American Primrose Society. and cvs., Zones 4–9), which belong to a completely different genus. seed catalogs only offer florist primroses (intended for potted ornamental greenhouse plants like the ones we see in supermarkets in January) or, even more confusing, evening primroses ( Oenothera spp. Primrose seed is typically started in winter from January until early March, but your greatest challenge may be finding good and viable fresh seed.
vulgaris) that grows wild in Southern Europe has an explosion of white flowers with dark yellow centers.
The straight species of common primrose ( P. If you sow seeds every year, this wait tends to disappear. Just don’t forget that primroses are perennial, so plan on starting seeds this winter, planting seedlings outdoors in late spring, and getting the first blooms the following spring. Best of all, the Northeast is particularly suited for some of the choicest woodland primroses. Most commercial perennial growers only offer a few varieties as plugs to wholesale growers. The cost savings alone should be obvious, not to mention that most of the excellent species available to grow are challenging to find even at the best garden centers. The benefits of raising one’s own primroses ( Primula spp.
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