lunar calendar
Moon phases in the grow
Today's moon, the 8 phases and what each one favors, from planting to harvest. Farming tradition explained for growers.
today's phase
Waxing gibbous
illumination: 79%
Peak uptake and transpiration. Feed well, dial in light intensity and finish transplants before the full moon.
The lunar month
June 2026
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Upcoming moons
Full moon
June 30
Last quarter
July 7
New moon
July 14
First quarter
July 22
The 8 phases and what each one favors
New moon
Energy goes to the roots and to fresh starts. Good time to prep substrate, plan the cycle and soak seeds. Avoid transplants and heavy pruning.
Waxing crescent
Sap starts rising. A good window to germinate seeds and root clones; above-ground growth starts gaining strength.
First quarter
Vigorous leaf and stem growth. A great phase to transplant seedlings, pot up and apply light training like LST.
Waxing gibbous
Peak uptake and transpiration. Feed well, dial in light intensity and finish transplants before the full moon.
Full moon
Maximum energy in the canopy. Traditionally tied to harvesting flowers at their peak; avoid heavy pruning and stress.
Waning gibbous
Energy starts moving down to the roots. A good phase to harvest, flush and start drying.
Last quarter
Maintenance phase: defoliation, lollipopping and pest control stress the plant less now.
Waning crescent
Rest. Prep the next cycle, clean the grow and let the plants wind down; go lighter on watering.
How to use the lunar calendar
Does the moon really affect the grow?
The scientific evidence is limited and studies are not conclusive, but the lunar calendar is a millennia-old farming tradition (from biodynamics to rural almanacs). Many growers use the phases as a management rhythm: a natural schedule that organizes tasks and builds a habit of regular observation.
Waxing vs waning
In the tradition, the waxing moon pulls sap upward (canopy): the half for germinating, transplanting and growing. The waning moon sends energy down (roots): the half for pruning, harvesting and maintenance. Memorize that axis and all 8 phases become intuitive.
How to apply it to your grow
Use the moon as a schedule, not a dogma: stressful tasks on the waning half, planting and transplanting on the waxing half. Log every task in your diary and compare cycles: your own data will tell you whether the lunar rhythm works for your grow.
The full lunar calendar in your pocket
GrowerHelper has a moon calendar built into your grow diary: see each day's phase, log events and compare cycles. 100% offline, private and ad-free.