Flame Red Grapefruit Tree Stop doing this if your basil wilting or turning black quickly. Basil doesn't like the cold so don't put it in the fridge. Instead, trim the stems and put the bouquet Sambucus nigra 'Thundercloud' This little plant is called heal all or self heal. Prunella vulgaris. If you're lucky this should be flowering in your garden right now. Popping up where it's needed. Some argue whether Jasione Plantwink