Garden centres and hydroponic grow shops sell germination cubes. There are several different brands, but they are all made from a sponge like material which retains moisture but is soft enough to allow small roots to develop and grow. Various materials have been used, including glass wool, coco fibre and synthetic polymer sponge.
Follow the advice on the cubes, normally you wet them with water (some prefer to use bottled water) or buffered water. The seed is pushed about 5mm below the surface. The damp germinating cube is then placed in a sealed sandwich box/bag to retain the moisture. The seeds often germinate within a couple of days, but may take longer.
Out of the best ways to germinate cannabis seeds, germination cubes are one of the preferred ways to get maximum germination rates. Once the seed has germinated the cube is simply transplanted into the next container to grow.
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I grew my auto Colorado cookies seedlings inside a small tent under a tube light. They grew and sprouted leaves. Roots came through and I transplanted to larger cubes. Left under small tube light till roots came through the bottom of the larger cube. I put them into large grow tent on a hydro set up. They have small thin roots but leaves have dropped and gone light. They look like they are dying. Growing under led telos 008 lights. Lights about 80 cm away from seedling. Any ideas how to save them.
Hello Stuart,
We are sorry to hear that your babies are struggling. Would you be able to provide us with some pictures and explanation on this page https://dutch-passion.com/en/customer-service? We will get in touch with you soon to help you!
Joe
Dutch Passion
Will this method work for autoflowers? The main concern is shocking them as i guess this is similar to a transplant. Thanks in advance.
It would work but indeed it is better to germinate autoflowers in a larger container so their main root can grow freely 🙂
Greetings!
Hi. What size of rockwool would be best for autoflowers?
Hey Mark,
Best would be if it is not a to small container for an autoflower to start in. We would like to help you with some more detailed information. Would you please send us a message at [email protected]?
Thanks!
Greetings,
Joe
Dutch Passion