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