This herb will even flourish in rich soil with little to no maintenance. Once you have an established plant, self-seeding ensures a ready supply of plants every year. ... Fluff the soil in spring and the seeds should germinate and produce a new batch of Cerinthe blue The Mexican shrimp plant, or Justicia brandegeeana, is a native of Guatemala, Honduras, and as its name implies, Mexico. It is an evergreen shrub that rarely grows more than 3 or 4 feet (1 m.) high, and about as wide. It thrives in the understory, a partially shaded area of tropical forests.
Do Cerinthe come back each year?
Self-seeding plants really are a gift to your garden, and honeywort (Cerinthe major 'Purpurascens') is the gift that keeps on giving. This annual (or occasionally biennial) flower will deposit its odd, square black seeds around the garden and become a feature for years to come.
Should I deadhead Cerinthe?
Cerinthe need to e watered regularly until they are fully established during periods of drought. You may wish to deadhead faded flowers to prevent invasiveness. Trim back unkempt and untidy stems and foliage to encourage a more compact plant.
