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