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Sempervivum (/ s ɛ m p ə ˈ v aɪ v əm / [1] [2]) is a genus of about 40 species of flowering plants in the family Crassulaceae, commonly known as houseleeks.Other common names include liveforever (the source of the taxonomical designation Sempervivum, literally "always/forever alive") and hen and chicks, a name shared with plants of other genera as well.
Passiflora caerulea - Common passionflower or Hardy Passion Flower is cold hardy and drought tolerant variety of passionflower grown from zones 6. [5] [6] [7] Passiflora foetida - is native to the desert southwest US and is cold hardy and drought tolerant variety of passionflower grown from zones 8. [1] [2]
"Perennial herbs like oregano, chives, thyme, and lemon balm can be cut back to about four to six inches above the ground after the first frost or in late fall," says Ghafari.
Cyclamen species range from frost-hardy to frost-tender. The most frost-hardy species, such as C. purpurascens, C. hederifolium, C. coum and C. cilicium, tolerate temperatures down to −20 °C (−4 °F). C. hederifolium has even survived prolonged freezing and temperatures down to −30 °C (−22 °F).
For edible herbs that will grow back every year, try these great perennial herbs in your garden. Chives, sage, and more will add so much flavor to your dishes. 20 Perennial Herbs You Can Enjoy ...
Hellebore plants should not be ingested as poisoning cases are most severe when the plants are eaten. This is especially true when hellebores are eaten in large quantities. [ 37 ] Symptoms of ingestion include: burning of the mouth and throat, salivation, vomiting, abdominal cramping, diarrhea, nervous symptoms, and possibly depression.