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