hardy annual การใช้

"C . hassleriana " is commonly cultivated in half-hardy annual.
These hardy annuals get a head start on spring by putting down roots throughout the fall and winter.
For the northeast United States, it is generally safe to treat half-hardy annuals in the same way as tender ones.
Hardy annuals tend not to like the heat of midsummer, and in any case will probably have bloomed themselves out by then.
The Canary creeper ( " Tropaeolum peregrinum " ) is a trailing and climbing half-hardy annual species with wiry stalks and palmately lobed leaves.