What is re-vegging? Why do our cannabis plants re-veg? And why is this useful? These are some questions that come to our mind when our plants undergo involuntary revegetation. A halt in the flowering stage and the development of new leaves and branches indicate that our plant has decided to go one stage back to re-veg. Re-vegging means reverting from the flowering stage back to the vegetative stage, causing a plant’s growth process to delay. This may occur voluntarily, by forcing the plant into re-vegetation, or accidentally, triggered by a light leak. Whatever the case may be, it is useful to know what to do and how to profit from this situation.
If we have failed to take cuttings on time, or whenever cuttings die, an available remedy is to re-veg the mother plant. By means of a controlled proceeding that consists in altering light hours, growers are able to re-veg a cannabis plant to take cuttings.
How to Re-Veg Cannabis
When a plant is ripe for harvest, the best way to re-veg consists in cutting out the apex, leaving buds, branches, and leaves below. Then, the photoperiod is switched to 20 hours of light per day—the most suitable period of light exposure for revegetation. As the photoperiod increases from 12 to 20 hours of light, plants photosynthesise over a longer period of time each day, causing stems and leaves to pop up again. This is the perfect time to take cuttings.
How to Re-Veg Cannabis Outdoors
In the case of outdoor cultivation, growers are totally dependent upon the natural cycle of day and night. A very frequent mistake is to germinate plants too soon, since plants would then get few hours of natural light. When plants germinate by the end of winter or the beginning of spring, it is most likely that they will flower earlier, because less hours of light are available during that time of the year. By summer, plants will move back to an earlier stage and start growing branches and leaves. Most preferably, growers should let plants go through spring in its full glory and avoid causing stress from re-vegging.
How to Re-Veg Cannabis Indoors
Indoor re-vegging is less common, but possible—especially when growers do not set up special growing tents. These are airtight systems that block any kind of light entering or leaving the growing room. In the case of a homemade indoor system, what’s best is to cover any opening or hole allowing light in, especially during those hours when plants should be in the dark.
Accidental re-vegging is triggered by light pollution, causing plants to stress out and move back to a prior stage within their growing process. Growers can get notice of such disruption because plants stop budding and start growing new leaves, leaving flowers with less resources. During this stressful episode, plant hormones undergo certain changes and induce the plant to interrupt its typical growing process. On many occasions, this results in weaker plants and a poorer harvest.
As we can see, re-vegging is a process that can be prompted voluntarily in order to keep a strain that we wish to clone but, at the same time, an experience that may bring about certain complications if a grower does not know how to react; harvest is thus delayed, and product quality suffers. Therefore, watch carefully whether lightning is appropriate for plants according to the growing stage they are passing through.