Crossandra (kanakambaram) grows best at 30–35 °C. It tolerates some shade but is damaged by cold and frost. Ideal soils are well-drained sandy loam and red soils with pH 6–7.5; test the soil for nematodes before planting. Types in the source: tetraploid (Orange, Lutea Yellow, Sebaculis Red) and triploid (Delhi Crossandra).
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Crossandra – Varieties; climate; soil, p. 254
