Fertilizer. . They aren't fussy about humidity. Enhance soil drainage and adjust watering to prevent future rot. A plant I like, but for the moment is missing from my garden, is red hot poker (Kniphofia uvaria). Spotting the. Unless soil is of very. red hot poker plant poisonous. 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. I like the plant - it should do well in my garden and. 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. All about Red Hot Poker plants, aka Torch Lilies. Trim and treat with fungicide to combat root decay effectively.