Diagnosing Brown Tips on Variegated Hawaiian Dwarf: Beyond Fluoride

Variegated Hawaiian Dwarf (Rhoeo spathacea nana variegata) has brown tips. Owner waters weekly with tap water left overnight for fluoride evaporation, uses garden soil, artificial lights. Expert Will Creed: fluoride unlikely; chlorine dissipates but fluoride doesn't. Hard water minerals build up and burn roots—use filtered/distilled water. Water thoroughly until drainage, not light frequent watering. Garden soil introduces unknown pH/minerals/critters; better to use peat-based mix. Flush soil with mineral-free water, test pH (6.0–6.8). Trim tips, adjust watering. Warm/cool white fluorescents are cheaper than grow lights; direct sun is best for color.