Common foxglove blooms mainly in early summer. ... Pollinated flowers are followed by a rounded fruit capsule which splits open at maturity to release the numerous small brown, ridged seeds. Each plant can produce 1-2 million seeds which will readily self-seeding under favorable growing conditions.

Do foxgloves come back every year?

Foxgloves are either biennial, producing a rosette of foliage in the first year followed by flowers in the second, or perennial, flowering every year. For structure they're ideal.

Do all foxgloves self seed?

Foxgloves are biennial which means that plants establish and grow leaves in the first year, then flower and produce seeds in the second. ... The common foxglove freely self-seeds. This means that new seedlings spring up at random all over the garden producing different shifting, untutored patterns of flowers each year.