Growing Cannabis Outdoors In The UK: August - September

Written by

Luke Sumpter specialises in endocannabinoid system science, cannabis phytochemicals, and organic cultivation.

AUGUST

• Day length August 1st: 15h 23m
• AVG temperature: 13–21°C

The final month of summer has arrived. Both temperature and daylight hours begin to dip. Cannabis plants pick up on the reduction of available light, which triggers them to start flowering.

Flowering plants require lower nitrogen levels and higher levels of phosphorus and potassium. You’ll need to change your feeding regimen to cater to these demands. Water regularly with Easy Bloom Booster Tablets to provide adequate potassium, calcium, and magnesium levels. Top-dress your soil with worm castings, kelp, and bone meal for a slow-release formula.

Humidity can become an issue as flowers start to develop. Their resinous and compact nature makes them an ideal breeding ground for mold. The UK can hit humidity highs of around 90% during August. Water the soil around your plants, and don’t spray your flowers directly. Keep polytunnels and greenhouses extremely well-ventilated.

Defoliation helps keep mold in check. This technique involves cutting away several fan leaves to improve airflow through the canopy. Defoliation also allows more light to reach bud sites deeper in the canopy.

SEPTEMBER

• Day length September 1st: 13h 32m
• AVG temperature: 11–18°C

Temperature and daylight hours continue to drop. Your flowers will start edging towards maturity. Scents of aromatic terpenes will fill your garden. Although pleasant, the smell can attract unwanted pests.

Fast-flowering Indica strains will be nudging closer to maturity. Flush your plants with pure water two weeks before harvest. Proceed to harvest, dry, and cure your bounty.

The southeast and northeast experience little rainfall throughout September. The south-west and north-west will see between 100–500mm of rain come through. Keep up with hand watering and routine checks on your irrigation system to ensure everything runs smoothly. Allow nature to water your plants but keep a tarp handy if severe and prolonged rainfall occurs. If you do have rain, check for bud rot/mold. If you find any, pick the affected areas off, so it doesn’t spread.

PROS AND CONS OF GROWING CANNABIS OUTDOORS IN THE UK

Sure, the sheer amount of rain can be annoying, but it keeps plants healthy and luscious when dealt with correctly!

Pros:

• Plenty of rain
• Mostly dry during the late flowering stage
• Growers know to expect occasional bad weather, which keeps them prepared with tarps, fans, and other equipment

Cons:

• Excess rain can lead to root rot and bud rot
• Draconian laws make growing cannabis a discreet activity

Read full article - https://www.royalqueenseeds.com/blog-growing-cannabis-outdoors-in-the-uk-month-by-month-guide-n1295#august