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