Ditch the dome… humidity dome for vegetative propagation!

side by side humidity dome test

Ditch the dome… humidity dome for vegetative propagation!

Plants like us do not tolerate stress well. Vegetative propagation and transplanting are two of the most stressful times your plants will endure during there life. Limiting the amount of stress is ideal for the most fruitful growth. So, does a humidity dome limit the amount of stress and encourage abundant root growth in vegetative propagation?

Based on the observations of a 14 day cloning cycle with two identical EZ-CLONE Classic Plant Cloning Systems with only one variable being a humidity dome, it is clear that the humidity dome is not required. No cuttings performed better with the use of a humidity dome. The control system’s cuttings exhibited more abundant root growth, longer roots with more developed secondary lateral growth and appeared to be less stressed as they did not wilt. Moreover, the cuttings in the control system never wilted during their transplant into soil, unlike the cuttings that were propagated under a humidity dome.

When you take a cutting from a mother or donor plant you are severing it from its life source. The absence of moisture being supplied to the cutting sends the cutting to a fight or flight scenario. The cuttings are now presented with a life or death decision. It can choose the blue pill and continue it’s existence by propagating roots or has the option of the red pill which is certain death. Increasing the level of humidity that is surrounding the cutting with a humidity dome offers a layer of comfort and false protection allowing the cuttings to still absorb their required moisture. Providing the cutting with all the moisture they require through a humid environment delays, the response to sprout roots. When a cutting is sprouting roots it is in search of moisture. The sooner you force your cuttings to seek out methods of survival on its own, the sooner it will recover from the stress of being sliced away from its mother.

Furthermore, the absence of a humidity dome delivers a double dose of shock and stress at once. I look at this as a two for one. Once you’re already stressed, a little more isn’t going to kill you. By forcing the cutting into seeking moisture on it’s own, you are killing two birds with one stone. Think of this as a screening process, kind of like the hunger games, throwing your cuttings to the wolves, or elements for that matter as they will not be living under a humidity dome their entire life. The sooner they become accustom to the “real world” the better off they will be. Survival of the fittest!

When you only deliver one stressor at a time you are prolonging the effects. As soon as your cutting is getting over the stress of being clipped from it’s mother you are shocking it again by transplanting it and removing the humidity dome. Opposed to the cutting who has already coped with the stress of no humidity dome throughout the propagation process. If your cutting was surviving with out a humidity dome while still attached to the branch on the donor plant, what would make you think it is instantly required once it is removed? It’s not. The use of a humidity dome during the traditional method of propagation is used to keep your medium wet. If the medium dries out so will your cutting unlike with aeroponic propagation where the proper ratio of air and moisture is delivered to your cuttings.

If you’re ready to take your cloning to the next level, remove the dome!

Below you can see three side be side comparisons of a 14 day cloning cycle with identical EZ-CLONE Classic 32 Plant Cloning Systems the only variable being the use of a humidity dome. The control system (no humidity dome) as you probably guessed, are the cuttings on the right side of photos with more prolific root growth.

Chrysanthemum A - side by side

Wandering Jew - side by side

Chrysanthemum B - side by side

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