How to Grow Biennials?

Most biennials need a partial shade so the summer sun does not dry out their leaves. Find a place in your garden that gets shade for part of the day as the home for your biennials. Keep in mind that your plants may “wander” a bit, or drop seeds and grow new plants away from where you originally planted them.

When should you plant biennials?

Hardy biennials can be sown outside from late spring to early summer. An exception is forget-me-not (Myosotis), which grows very quickly and shouldn't be sown until midsummer. If the plants set any flower buds in their first year, pinch the buds off because allowing them to flower will diminish their second-year bloom.

Do you have to replant biennials?

Perennial plants live three years or more. ... During the biennial's second season, biennial plant growth completes with the formation of flowers, fruit, and seeds. The stem of the biennial will elongate or “bolt.” Following this second season, many biennials reseed and then the plant usually dies.