| Humidity & Temperature Rate | |
|---|---|
| RH | Temperature |
| 40% | 15oC |
| 41% | 15oC |
| 42% | 15oC |
| 43% | 15oC |
| 44% | 15oC |
| 45% | 15oC - 16oC |
| 46% | 15oC - 16oC |
| 47% | 15oC - 16oC |
| 48% | 15oC - 16oC |
| 49% | 15oC - 16oC |
| 50% | 15oC - 18oC |
| 51% | 15oC - 18oC |
| 52% | 15oC - 18oC |
| 53% | 15oC - 18oC |
| 54% | 15oC - 18oC |
| 55% | 15oC - 19oC |
| 56% | 17oC - 19oC |
| 57% | 17oC - 19oC |
| 58% | 17oC - 19oC |
| 59% | 17oC - 19oC |
| 60% | 17oC - 22oC |
| 61% | 19oC - 22oC |
| 62% | 19oC - 22oC |
| 63% | 19oC - 22oC |
| 64% | 19oC - 22oC |
| 65% | 19oC - 24oC |
| 66% | 22oC - 24oC |
| 67% | 22oC - 24oC |
| 68% | 22oC - 24oC |
| 69% | 22oC - 24oC |
| 70% | 22oC - 26oC |
| 71% | 22oC - 26oC |
| 72% | 22oC - 26oC |
| 73% | 22oC - 26oC |
| 74% | 22oC - 26oC |
| 75% | 25oC - 29oC |
| 76% | 25oC - 29oC |
| 77% | 25oC - 29oC |
| 78% | 25oC - 29oC |
| 79% | 25oC - 29oC |
| 80% | 28oC - 33oC |
Cuttings & Seedlings
A high humidity isideal whenplants are young.
At this stage, you don't want them to lose much water - they don't have any roots for water uptake.
Aim for: 70 - 80% RH (depending on temperature - see table)
A humidity like this encourages plants to devote most of their energy to growing roots and foliage, rather than tryingto correct their humidity.
- roots form quicker
- health improves
- growth is much more vigorous.
Use a propagatorto create a humid propagation environment.
All propagators that we sell haveventilation panels which can be opened and closed to change your humidity.
Veg growth
During veg, your humidity should be lower.
Aim for: 50% - 80% RH(depending on temperature - see table)
Now plants have some roots, you want them to transpire.As water is lost through leaves, nutrients and water are drawn up through roots.
Plants start growing leaves and shoots at a rapid rate.This puts less transpiration stress on each leaf, so you can afford to have a lower humidity.
Don't let your humidity drop too low, though. If plants lose too much water, they draw more up through roots. Over a long period of time, this can cause overfertilisation.
Flowering
During flowering, buds start to form.
At this point, you want to lower your humidity to reduce the riskof rot.
Aim for: 40 - 60% RH(depending on temperature - see table)
Keep a close eye on it with a temperature and humidity meter.
To stop yourhumidity from rising too high, make sure your ventilation is up to scratch.
Failing that, you can get a dehumidifier.
| Hint |
|---|
During lights off, your temperature drops. This means your air can hold less water. To counter this, you may have to adjust your humidity. |
