Outdoor growing in summer: top tips for big harvests
Summer is the ideal season for growing cannabis outdoors. With long days full of sunlight and warm temperatures, these months offer perfect conditions for strong plants with huge harvests. Whether you are a beginner or an experienced grower, outdoor growing in summer can deliver top results if you apply the right tips. In this article we share practical advice to make your plants thrive. Ready to buy cannabis seeds and get started? Let's dive into the essentials of successful outdoor growing.
Preparation: choose the right cannabis seeds for outdoor growing
For outdoor growing in summer you start by selecting quality cannabis seeds suited to the outdoor climate. Not all seeds perform equally well under the open sky. Choose strains that flower quickly and cope with changeable weather, such as indica-dominant strains or autoflowering seeds.
The best strains for summer outdoor growing
- Northern Lights: compact plants with high yields and fast flowering, ideal for Dutch summers.
- Critical Mass: produces huge buds and is robust against pests and rain.
- Auto Blueberry: autoflowering variety that grows regardless of the light cycle, perfect for beginners.
Want to get started right away? Buy your cannabis seeds at FreeSeedsOnline.com and take advantage of our buy 4, pay for 3 offer on our own seeds. Order your outdoor cannabis seeds now
Choosing the optimal location for your outdoor grow
A good location is crucial for successful growing outdoors. Your plants need at least 6–8 hours of direct sunlight per day, preferably on a south-facing slope. Avoid shady spots and provide wind protection so the plants do not get damaged.
Key factors for the perfect spot
- Sun exposure: aim for spots with full sun from morning to evening.
- Soil quality: loose, well-draining soil with a pH between 6.0 and 7.0.
- Privacy: choose a screened-off garden or greenhouse to avoid unwanted attention.
- Drainage: good drainage prevents root rot during summer showers.
Test your soil with a simple pH kit and improve it with compost or perlite for optimal growth. Read more about soil preparation for growing
Sowing and germinating: start your outdoor grow right
Start by ordering your seeds in late April or early May, so your plants can go outside in June. Use the paper towel method for germination: moisten a paper towel, place the seeds between it and keep it warm and dark at 20–25 °C.
Step-by-step plan for germinating and transplanting
- Sow in small pots with seedling and cutting soil.
- Keep the soil moist but not wet; germination takes 3–10 days.
- Transplant to bigger pots once the seedling is 10–15 cm tall.
- Harden off the plants: put them outside gradually so they get used to sun and wind.
After a week of acclimatising your plants are ready for their outdoor pot. For feminized seeds, check our cannabis seeds collection. Order feminized cannabis seeds
Feeding and watering during the summer growth stage
Outdoor growing in summer calls for a balanced feeding plan. Use organic fertilisers rich in nitrogen during the vegetative stage (May–July) and switch to bloom fertiliser with plenty of potassium and phosphorus from August.
Tips for water and nutrients
- Watering: early in the morning, deeply but not daily — let the top layer dry out.
- Fertilisers: start with half the dose to prevent overfeeding.
- Foliar spray: spray with neem oil against spider mites and aphids, common in hot summers.
- Check pH: keep rainwater at pH 6.5 for the best uptake.
Popular organic boosters are available in our shop. Combine them with your cannabis seeds for a complete setup. Nutrients for outdoor growing
Training techniques for bigger harvests
To get maximum yields from outdoor growing in summer, apply low-stress training (LST). Bend branches horizontally to spread the light better and create more bud sites. This can increase your harvest by 20–50%!
Effective training methods
- LST (Low Stress Training): tie branches down for a flat bush structure.
- Topping: cut out the top to stimulate several main colas.
- SCROG net: use a net to steer growth and make the most of the space.
Start training around week 3 of the vegetative stage. For more techniques, see our guide. Training techniques for growing cannabis
Avoiding common mistakes in outdoor growing
Many growers make mistakes that cost them harvests. Overwatering, too little sun or ignoring pests are common. Check daily for yellow leaves (iron deficiency) or curling (too much heat).
Top 5 pitfalls and solutions
- Too much water: use the finger test — dry at 5 cm depth.
- Pests: introduce ladybirds as a natural enemy.
- Heat stress: shade cloth at temperatures above 30 °C.
- Nutrient deficiencies: use an NPK chart as a guide.
- Harvesting too late: harvest at 70% brown trichomes for the best potency.
Harvesting and drying: from plant to perfect buds
Expect to harvest from mid-September to October, depending on the strain. Cut the branches, hang them upside down in a dark, ventilated room (18–24 °C, 45–55% humidity) for 7–14 days to dry. Then cure in glass jars for the best taste.
With this approach you can get 400–600 grams per plant from your summer outdoor grow!
Conclusion: start your summer outdoor adventure today
Outdoor growing in summer offers endless possibilities for big harvests once you master the basics: the right seeds, location, care and training. Order your cannabis seeds at FreeSeedsOnline.com now and turn your garden into a green oasis. Questions? Get in touch. Happy growing, and enjoy your harvest!
