What type of grow light is best for weed plants?
Most growers agree that for young plants through the veg stage of growth you will want to have a light source with a good amount of blue light or even white (full spectrum) lighting. The main reason for this is to reduce internode stretching to produce a stockier, healthier plant.
How far should grow lights be from weed plants?
between 12-24 inches
The LED grow lights should be between 12-24 inches from the top foliage of your marijuana canopy. Monitor the plants closely to make sure they have enough light and not too much, which can cause adverse effects such as bleaching, discoloration, stunted or irregular growth.
Is more light better for growing weed?
Too much light can harm cannabis plants, and a thoughtful grower needs to be strategic about the placement and strength of light sources in a greenhouse environment.
Do you need CO2 for growing weed?
Carbon dioxide (CO2) is a gas that fills our atmosphere, and it’s essential for plants to complete the process of photosynthesis wherein plants convert CO2 into energy. High levels of CO2 in a cannabis garden can result in stronger plants with increased yields – if introduced correctly.
How close should LED lights be to weed seedlings?
In general, you’ll want to hang your light no more than 12″ away from your plants. – Remember: after 12″ fluorescent lighting loses its power, so make sure you don’t raise it any more than 12″ above your canopy otherwise your plants aren’t getting light energy.
Can a weed plant get too much light?
Cannabis plants will show a number of key signs when they’re getting too much light. The most obvious indicator is leaf burning. This typically causes yellow leaves at the top of the plant directly under the grow lights. While the inside veins stay green, the leaves take on a yellow, burnt look.
What color LED for growing weed?
The colors from the color spectrum that are most effective for the growth of plants are blue and red light. The colors like yellow and green are the least effective. Different colors should be used at different phases of plant growth. In the case of marijuana, blue light should be used during the vegetative stage.
Does CO2 make difference weed?
Do weed plants give off oxygen?
The plant draws water through its roots. The leaves take in carbon dioxide (CO2) from the air and trap energy from the sunlight. Next, the plant uses the sun’s energy to turn water and carbon dioxide into sugars and oxygen. The plant releases the oxygen into the air and uses the sugars to grow.
Can you give weed plants too much light?
How high should light be above weed seedlings?
between 24-36 inches
Where Should Grow Lights Be Located? For seedlings, LED grow lights should generally be mounted between 24-36 inches above the plant canopy – however, this depends on the power (wattage) of the light source.
How much par do weed plants need?
General Recommendations
Growth Phase | PAR Level (PPFD) |
---|---|
Seedling / Clone | 100 – 300 |
Vegetative | 250 – 600 |
Bloom / Flowering | 500 – 1050 |