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coco coir cannabis grow guide

Coco coir cannabis grow guide

6.) Maintain flowering plants until they are ready to harvest. Care is basically the same as before, except during the flowering stage it becomes more important to control temperature and humidity than ever. Cannabis plants are much more finicky in the flowering stage, and it’s easy to trigger problems if you aren’t controlling your environment. Watch over plants closely, and make every effort to expose all bud sites to light and a breeze. You can still train plants by gently bending too-tall colas, but avoid any major training once the plant has started making buds.

OR 3 x 3-gallon containers plus a little extra

1.) Germinate seeds in fresh Rapid Rooters on top of the moist but not soaking coco coir in your solo cups. Some growers will plant their seeds directly in the coco coir, and that works well, too. You can also place the Rapid Rooters in a tray, making sure there’s a very shallow pool of water at the bottom to keep them moist. Fresh Rapid Rooters give some of the best germination rates, but of course there’s other ways to start your plants. Learn about other ways to germinate cannabis seeds here:

See What You’re Making
Makes about 10 gallons of potting mix

Coco seems almost tailor-made for growing cannabis… as long as you follow basic instructions.

This is a tried and tested nutrient system for any type of hydroponic growing including coco coir. You can actually follow their nutrient schedule listed on the included nutrient schedule; it’s formulated for plants like cannabis.

Any quality cannabis nutrients made for hydroponics will work well for growing in coco coir as long as you also use a Cal-Mag supplement.

Some growers let it soak longer, especially if they’re using pH’ed water that’s been supplemented with a Cal-Mag supplement, giving the coco more time to “take in” the good stuff. But I usually wait about 10 minutes and go to the next step.

Coco coir cannabis grow guide

For too long, peat moss has been widely used in domestic gardening. Being a plant-growing medium that takes hundreds of years to replenish, harvesting it for this use is simply not sustainable.

Another important factor to consider is the quality of the coco coir you are purchasing. At Coco & Coir, the high-grade coco peat briquettes we supply are pathogen free, of consistent quality and created from only the most sustainable and ecologically friendly manufacturing methods.

When you buy high-quality coco coir peat briquettes, the coir you receive doesn’t contain any nutrients of its own. This means you will need to add plant food to every watering, the content of which will largely depend on what you’re trying to grow in the soil.

The weight of your plant pot will also provide a reliable indication of the amount of water being retained: the heavier it is, the more moisture it contains. Before watering, it’s a good idea to lift your coco pot to gauge what it feels like when free of water. In the future, if it feels on the light side, you’ll be better equipped to recognise that your coco coir needs watering.


As with any soil mix, it’s impossible to provide a one-size-fits-all approach to watering your coco coir. A good rule of thumb would be to water every four or five days. You also need to use a pot that provides good drainage, as your coco coir requires air as well as moisture to promote healthy plant growth. If there’s too much moisture inside, there won’t be enough air.

Whilst growing plants in coco coir is similar to growing in soil, there are some differences. This article looks at how you should be watering and feeding your plants when using the ecologically sound growing medium that is coco peat. Our experts can guide you on how and when to feed and water coco coir, in order to give yourself the best chance of achieving optimum results.

After watering your coco peat, there are a couple of ways you can perform a quick check to ensure that you’ve done it correctly. First, if you pick up some of the mixture in your hand and water runs out from it immediately, it means you’ve over-watered. If no moisture is evident, this indicates that it’s too dry. Achieving the ideal level of moisture in the soil will result in your coir letting out a little moisture – but it should disappear quickly through your fingers and then stop.


If you would like to find out more about our passion for greener horticulture or you’d like some expert advice on using coco peat for your home gardening projects, please visit us online or give our friendly team a call on 0207 1756786.