growing cannabis seeds in rockwool

Growing cannabis seeds in rockwool

It’s easy:
get 2 paper towels
fold them in half together
place the seeds in-between the folded area
dampen the paper towel (damp, not dripping, but not too dry either)
place the damp paper towel with seeds in a ziploc bag
put them somewhere dark for a couple days
ta-da!

seedlings in them you would not have to water for about a week maybe longer.

Strains,
Whitewidow x Euforia x "Mindfuck".
Ghost of Ghana 100% equatorial sativa. (special).
Food of Gods secret strain from village of south Africa! (special).

germinate them what ever method you prefer to use,

Well-Known Member

i have a Hydro set up also so i have been starting seedlings in rockwool for years.

Hey i really do need a BEST advice how to start my uniq seeds in high success rate! Some of my seeds may be damaged over years, but i need to try to save them!

you dont use a humidity dome for starting seeds and second rockwool cubes will not dry out. they retain allot of water, and with

Dirty Harry

Also, rock wool is naturally alkaline, so you’ll need to soak it in PH balanced water over night first before putting ANYTHING in it. My plants are currently in rock wool and doing great

germinate them them move them to the rock wool cubes

Growing cannabis seeds in rockwool

When formulating this plan I was a little hesitant as I hadn’t seen that many people using this process. Most people if they use rockwool stay with rockwool in a hydroponic indoor growth setup. I didn’t find many people who took the rockwool cube and transferred it to soil after it sprouted and wasn’t sure if this would work.

Preparing Rockwool Cubes for Germination

After acquiring growing equipment and cannabis seeds I now had everything I needed to start growing marijuana. The first major step in this process is germinating the seeds or getting the plant to sprout from the seed.

Are You Ready to Start Growing Yourself?

Another method is to use 3″ rockwool cubes to start seedlings in, then put 20 of them in a litter pan, cover it with another pan, and transport this to the grow site. The cubes can be planted directly into soil.

Growing cannabis seeds in rockwool

A good LED grow light such as the SpiderFarmer SF-1000 is perfect for germinating cannabis seeds in rockwool cubes.

The proper pH for watering rockwool cubes is 5.5.

LED grow lights

Rockwool mold issues are usually related to an overly humid environment. Fragile seedlings absorb moisture from the air through their leaves, so using humidity domes help maintain proper conditions. But if your humidity dome is completely covered inside with condensation you risk mold. Open vents on top of the dome, and if need be wipe inside down with a dry paper towel.

As with all pH pens, you need to make sure to keep the bulb wet so it doesn’t dry out, and calibrate it frequently to ensure accurate measurements.

What is the proper pH when watering rockwool cubes for cannabis seeds?

Heat mats speed up germination for cannabis seeds in rockwool. They’re generally inexpensive and are a worthwhile investment regardless of whether you’re growing in rockwool, soil, coco coir, or any other medium.