If you want to start some plants for the first time, seeding them is easy. The best time to plant forget-me-not seeds is in spring to August if you want to have blooms the following season. Early spring seeded plants may produce flowers by fall. If you are willing to wait a season for blooms, sow the seeds in fall. The plants will produce flowers a year from the next spring.
Seeds will germinate in 8 to 14 days if kept moderately moist. Thin to 10 inches (25 cm.) apart to allow room for adult plants. Plant indoor sown forget-me-not outdoors after acclimating plants to outside conditions over the course of a few days.
When to Plant Forget-Me-Nots
Forget-me-nots are usually biennial, which means they flower and die in the second year. This is when they set seed too, which they wantonly release everywhere. Once you have forget-me-nots in your garden, it is rarely necessary to plant seed. The little plants can be left to overwinter and then get moved to wherever you want them in early spring.
Pick a location with partial shade or at the very least, protection from the hottest rays of the day. You may also sow the seeds indoors three weeks before the last expected frost. This will give you earlier blooms. For outdoor sowing, plant seeds with 1/8 inch (3 ml.) of soil lightly sprinkled over them in early spring when soil is workable.
Tips on Forget-Me-Not Seed Planting
Forget-me-nots are one of those charming, old school flower specimens that provide cheery blue life to gardens that are just waking up from winter naps. These flowering plants prefer cool weather, moist soil and indirect light, but they will sprout up practically anywhere with wild abandon. If you already have the plants in your landscape, planting forget-me-nots from seeds is rarely necessary. This is because they are rampant self-seeders. If you want to introduce the plants to new territory, know when to plant forget-me-nots to ensure success with these easy little plants.
Forget-me-not is a perennial that tolerates a wide variety of soils. Choose a site with full sun to partial shade. Provide low to moderate moisture. Drought tolerant once established.
Start seed indoors 4-6 weeks before last frost or direct seed outdoors as soon as soil can be worked. Seed germinates best when soil temps are between 65-80°F. Sow seeds 2-4″ apart and 1/16″ deep. Seeds will sprout in 5-10 days. Thin seedlings so that mature plants are 4-6″ apart.
Forget-me-not seed matures late summer-fall. Seed is ready to harvest when brown and dry. Store seeds in a cool, dry place. Seeds are viable for 1 year.