Unless soil is of very. Enhance soil drainage and adjust watering to prevent future rot. Trim and treat with fungicide to combat root decay effectively. I like the plant - it should do well in my garden and. All about Red Hot Poker plants, aka Torch Lilies. After that, these plants can survive in some periods of. Learn how to choose a variety of this unusual, flowering perennial for your growing conditions. Fertilizer. A plant I like, but for the moment is missing from my garden, is red hot poker (Kniphofia uvaria). Spotting the. red hot poker plant poisonous. Red hot pokers do best in moderate temperatures, between 60ºF and 90ºF. Red hot poker plant care involves regular watering until these plants are established. They aren't fussy about humidity. .