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cannabis cloning tips

Cannabis cloning tips

  1. Water your clones with a diluted nutrient solution (400-600 parts per million or ppm) and place them under a low-intensity fluorescent fixture; T8 or T12 bulbs are ideal for this purpose, T5 bulbs are can cause plants to begin “stretching” before you are ready.
  2. Be sure to keep the cubes moist, but be careful not to allow standing water to accumulate in the tray. This will cause the rate of growth to slow, keeping them a manageable size and ensuring that some clones are not dwarfed by larger ones.
  3. As your clones begin to stretch, be sure to rearrange them to prevent some clones from being “shaded out,” and transplant them as soon as possible.

For the first week or two, be sure to check the moisture of the actual rockwool cube. In some cases, it is possible for the potting media to wick moisture away from the cube. In these cases, the potting media would be moist, but the cube may be too dry to support the plant. If this happens, pour about 1 cup of water onto the cube itself. Within two weeks the plant will develop a stronger root system, and this will not be an issue.
Cannabis clones go through two cycles in their lifetime: the vegetative cycle and the flowering cycle. During the vegetative cycle, a plant is doing the majority of its root and foliage growth and should be receiving roughly 18 hours of light and 6 hours of darkness each day. If clones are not kept in the vegetative grow state long enough this can cause something called pre-flowering. Cannabis plants are photosensitive, meaning they will flower if they receive too much darkness, which can also cause a plant to stress (hermaphrodite: produce seeds). It is important to keep a close eye on the plants in this early stage of life and to watch for signs of heat stress such as drooping or curling leaves. If they do show signs of stress give them a break and move them back to the shade. It is wise to continue to give supplemental lighting through the dark cycle of the day ensuring they do not receive more than 10 hours of darkness.
Pro Tip: Some growers reduce “transplant shock” to their clones by soaking them in a vitamin and hormone solution such as Super Thrive. Super Thrive and similar products contain vitamins and hormones that are reported to minimize stress on growing plants. Prepare a batch by mixing one gallon of water with ¼ teaspoon of concentrate. Soak clones for 15 minutes before transplanting.
You need to introduce your clones to sunlight (after transplant) in a gradual, slow manner. Starting with partial shade and indirect sunlight will be beneficial for the first few days. The partial sun will get them invigorated to grow and the shade will ensure the heat is not so strong that they are overwhelmed and go into shock.
Photo credit to @m0m_jeens (Instagram)
Photo credit to @plantgame_bobross (Instagram)
First, dig a small hole in the media about the size of the 1-gallon pot. Place the clone in the hole. The top of the cube should be level with the media. If the rockwool cube is exposed too much, it will dry out easily. If the media level is above the cube, it may come into contact with the stem. This can cause fungal disease. The stem of the clone should be as vertical as possible. Sometimes this means that the rockwool cube will need to be planted crooked. We find that having a vertical stem leads to superior growing results.
For a step by step on how to ease your clones into direct sunlight, read our Hardening Off blog post.
Cannabis plants are very sensitive in the early stages. Special care is needed to ensure that your cannabis clone grows into a beautiful and healthy flower. Our clones are guaranteed to be pest and disease free, but to ensure you are successful with the plants you choose we provided some tips on how to care for them.