Watermelon Runtz

Start with a mild vegetative feed, increase nutrients during stretch and early flowering, then reduce N in late bloom to favour bud development.

Maintain strong airflow, keep relative humidity low in flowering, and remove inner foliage to increase light and air penetration.

Harvest when trichomes are mostly milky with a few ambers for balanced effects; check multiple buds for consistency.

Yes, it performs well outdoors with shelter or in a greenhouse; expect harvests in late September to October depending on the season.

You can, but feminized seeds are recommended to avoid males and ensure all plants produce buds.

Topping and selective defoliation improve light penetration and reduce rot risk, especially in denser phenotypes.

A flush of 7 to 14 days with plain water is common to help clear excess nutrients before harvest.

Spider mites and aphids can be an issue; inspect regularly and use biological controls or targeted treatments early.

Lower humidity as flowering progresses, use dehumidifiers in greenhouses and keep good circulation to prevent bud rot.

Low-stress and screen-of-green training both work well to maximise light spread and yield potential.