Double Rainbow

Double Rainbow tolerates moderate humidity but needs strong airflow and canopy management to prevent mould and bud rot.

Start with a balanced vegetative feed and shift to a bloom formula in week four of flowering, reducing nitrogen and increasing phosphorus and potassium.

Many growers perform a light flush in the final 7-10 days to improve smoothness, but monitor trichomes for optimal timing.

Use good spacing, selective defoliation, and plastic covers or shelters outdoors to limit wetting; indoors keep RH below 50% in late flower.

Yes, it performs well with organic soil and compost teas if nutrient levels are monitored and pests are managed proactively.

Yes, topping, low-stress training and SCROG increase yields by evening out the canopy and improving light penetration.

Aphids, spider mites and fungal pathogens are the main threats; regular inspections and biological controls keep populations in check.

Cooler nights can slow maturation and deepen terpene expression, but avoid prolonged cold which stresses the plant and reduces yields.

Yes, a ventilated greenhouse gives the benefits of outdoor light with added protection, though dehumidification may be required during wet spells.

For humid climate cannabis growing, focus on airflow, canopy openness and using resistant phenotypes; external shelters and careful timing of outdoor flushes are essential.