The two main types are Myosotis scorpioides or true forget-me-not, which is a perennial; and Myosotis sylvatica or woodland forget-me-not, which is a short-lived perennial but often used as an annual/biennial.
Sow forget-me-not seeds directly outdoors in May or June, or indoors in May, June and September. If sowing under cover, sprinkle seeds and cover with compost. Use a heated propagator or a warm windowsill to create the right conditions for germination. Once seedlings are large enough to handle, prick out and pot on.
Forget-me-nots are perennials that regrow themselves year after year, which can be a blessing and a curse. On one hand, you don't have to plant them every year to keep your garden looking great. On the other, they can easily get out of control.
Germination usually occurs after about 10 to 14 days. After that, it takes about a year for forget-me-nots to grow to maturity and be able to flower. Thin out the seedlings when they develop their first set of true leaves.. . . . .364011234360!]0000000000000009783314144769!]