Corn Cob

A sheltered greenhouse provides the best balance of protection and light for Corn Cob; this suits common UK conditions and reduces exposure to coastal damp.

Maintain airflow, keep RH below 50% during late flowering, and remove dense leaves around colas; these steps are essential for safe UK greenhouse cannabis growing.

Use a balanced veg formula then switch to lower nitrogen, higher phosphorus and potassium during flowering; organic teas and calmag can help in Devon's mineral-poor soils.

Plants tolerate breezes but require staking or netting in exposed sites; a greenhouse reduces wind stress and physical damage to branches.

Yes, topping and low-stress training promote an even canopy and improve light penetration, increasing greenhouse yield potential.

Expect around 8–10 weeks under 12/12 light, with outdoor harvest in late September to early October in much of the UK.

Watch for thrips, aphids and spider mites; frequent inspections and integrated pest management help keep populations under control.

Supplemental heat is useful during cold snaps to prevent slowed growth and to keep humidity down in the early and late season.

Dry hanging in a dark, ventilated room at 50% RH and 16–18°C for 7–10 days, then cure in jars for several weeks to improve flavour and smoothness.

Water less frequently but deeply, monitor pot moisture closely, and avoid prolonged wet soil which raises mould risk in damp coastal regions.