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Regulation of reproductive success in Hydrophyllum appendiculatum, a biennial plant. Ph.D.
Main features: supply of seasonal, annual and biennial plants for the city of versailles
Sometimes perennial and biennial plants are managed as annuals and could be considered pseudo-annuals.
Biennial plants produce vegetative growth through the first warm period, then slow down through a period of cold weather and flower in the second warm period, typically spring.
Choose a sunny, warm site with shelter from the wind and keep annuals and biennial plants apart from perennials so that when they have finished flowering the are a can be dug over and re-sown without disturbing the roots of permanent plants.
They were derived from an initial cross of cucubb biennial plants x CuCuBB plants of PI 165554, a small, annual, autogamous introduction from India, followed by six successive backcrosses of cucubb segregates to the CuCuBB annual parent.
Don't forget this is an opportune time to collect ripe seeds from annuals, perennials and biennial plants.
PREPAREa small area of soil where you can sow seeds of some biennial plants which will then produce flowers next year.