Planting by the Moon: September 2027
Moon gardening calendar for September 2027 (US Eastern Time): the days to sow, plant, prune and harvest by the Moon's phase and sign. Above-ground crops: September 1 (6:00 AM–9:29 PM), 4, 5 (6:00 AM–3:06 PM), 9, 10, 14. Root crops, tubers and bulbs: September 18 (6:05 PM–10:00 PM), 19, 20 (6:00 AM–9:13 PM), 23 (6:02 AM–10:00 PM), 24, 27 (10:28 AM–10:00 PM), 28 (6:00 AM–3:49 PM). Rest days with no planting: September 15 (full moon), 29 (new moon).
Times are Eastern Time (New York): EST, UTC−5, in winter and EDT, UTC−4, during daylight saving time. The Moon changes phase and sign at the same instant everywhere, so only the clock time differs: in Central Time subtract 1 hour, in Mountain Time 2 hours, in Pacific Time 3 hours.
Garden days in September 2027
- Sowing and planting above-ground crops: September 1 (6:00 AM–9:29 PM), 4, 5 (6:00 AM–3:06 PM), 9, 10, 14; best: 4, 5 (6:00 AM–3:06 PM), 14
- Root crops, tubers and bulbs: September 18 (6:05 PM–10:00 PM), 19, 20 (6:00 AM–9:13 PM), 23 (6:02 AM–10:00 PM), 24, 27 (10:28 AM–10:00 PM), 28 (6:00 AM–3:49 PM); best: 23 (6:02 AM–10:00 PM), 24
- Sowing and planting flowers: September 2, 3, 30
- Grafting: September 1 (6:00 AM–9:29 PM), 4, 5 (6:00 AM–3:06 PM), 9, 10, 14
- Repotting houseplants: September 1 (6:00 AM–9:29 PM), 4, 5 (6:00 AM–3:06 PM), 9, 10, 14
- Watering by tradition: September 4, 5, 6, 13, 14, 16, 23, 24, 25
- Fertilizing: September 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 16, 18, 19, 20, 23, 24, 25, 27, 28, 30
- Pruning trees and shrubs: September 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
- Weeding and cultivating: September 6, 7, 8, 11, 12, 13, 16, 17, 18, 21, 22, 23, 25, 26, 27
- Pest control: September 6, 7, 8, 11, 12, 13, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
- Harvesting for storage: September 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28
- Rest days, no planting: 15 (full moon), 29 (new moon)
Moon gardening calendar by day
| Date | Moon phase and sign | Recommended tasks | Not recommended |
|---|---|---|---|
| Wed 09/01 | Waxing crescent Virgo | Sowing and planting above-ground crops (6:00 AM–9:29 PM); grafting (6:00 AM–9:29 PM); repotting houseplants (6:00 AM–9:29 PM); fertilizing | Planting root crops and bulbs; pruning; starting plantings 9:29 PM–midnight (void-of-course Moon) |
| Thu 09/02 | Waxing crescent Virgo → Libra 1:07 AM | Sowing and planting flowers; fertilizing | Planting root crops and bulbs; pruning |
| Fri 09/03 | Waxing crescent Libra | Sowing and planting flowers; fertilizing | Planting root crops and bulbs; pruning |
| Sat 09/04 | Waxing crescent Libra → Scorpio 3:44 AM | Sowing and planting above-ground crops; grafting; repotting houseplants; watering; fertilizing | Planting root crops and bulbs; pruning |
| Sun 09/05 | Waxing crescent Scorpio | Sowing and planting above-ground crops (6:00 AM–3:06 PM); grafting (6:00 AM–3:06 PM); repotting houseplants (6:00 AM–3:06 PM); watering; fertilizing | Planting root crops and bulbs; pruning; starting plantings 3:06 PM–midnight (void-of-course Moon) |
| Mon 09/06 | Waxing crescent Scorpio → Sagittarius 10:01 AM | Until 10:01 AM: watering; fertilizing From 10:01 AM: weeding and cultivating; pest control; harvesting | Until 10:01 AM: sowing and planting above-ground crops, grafting, repotting houseplants (void-of-course Moon); planting root crops and bulbs; pruning From 10:01 AM: sowing and planting; transplanting; pruning |
| Tue 09/07 | First Quarter 2:31 PM Sagittarius | Weeding and cultivating; pest control; harvesting | Sowing and planting; transplanting; pruning |
| Wed 09/08 | Waxing gibbous Sagittarius → Capricorn 8:12 PM | Until 8:12 PM: weeding and cultivating; pest control; harvesting From 8:12 PM: fertilizing | Until 8:12 PM: sowing and planting; transplanting; pruning From 8:12 PM: sowing and planting above-ground crops, grafting, repotting houseplants (window shorter than 2 hours); planting root crops and bulbs; pruning |
| Thu 09/09 | Waxing gibbous Capricorn | Sowing and planting above-ground crops; grafting; repotting houseplants; fertilizing | Planting root crops and bulbs; pruning |
| Fri 09/10 | Waxing gibbous Capricorn | Sowing and planting above-ground crops; grafting; repotting houseplants; fertilizing | Planting root crops and bulbs; pruning |
| Sat 09/11 | Waxing gibbous Capricorn → Aquarius 8:50 AM | Until 8:50 AM: fertilizing From 8:50 AM: weeding and cultivating; pest control; harvesting | Until 8:50 AM: sowing and planting above-ground crops, grafting, repotting houseplants (void-of-course Moon); planting root crops and bulbs; pruning From 8:50 AM: sowing and planting; transplanting; pruning |
| Sun 09/12 | Waxing gibbous Aquarius | Weeding and cultivating; pest control; harvesting | Sowing and planting; transplanting; pruning |
| Mon 09/13 | Waxing gibbous Aquarius → Pisces 9:39 PM | Until 9:39 PM: weeding and cultivating; pest control; harvesting From 9:39 PM: watering; fertilizing | Until 9:39 PM: sowing and planting; transplanting; pruning From 9:39 PM: sowing and planting above-ground crops, grafting, repotting houseplants (window shorter than 2 hours); planting root crops and bulbs; pruning |
| Tue 09/14 | Waxing gibbous Pisces | Sowing and planting above-ground crops; grafting; repotting houseplants; watering; fertilizing | Planting root crops and bulbs; pruning |
| Wed 09/15 | Full Moon 7:03 PM Pisces | Planning and seed preparation | Sowing and planting; transplanting; pruning; grafting |
| Thu 09/16 | Waning gibbous Pisces → Aries 8:56 AM | Until 8:56 AM: pruning; watering; fertilizing; pest control From 8:56 AM: pruning; weeding and cultivating; pest control; harvesting for storage | Until 8:56 AM: planting root crops, tubers and bulbs (void-of-course Moon); sowing above-ground crops; harvesting for storage From 8:56 AM: sowing and planting; transplanting |
| Fri 09/17 | Waning gibbous Aries | Pruning; weeding and cultivating; pest control; harvesting for storage | Sowing and planting; transplanting |
| Sat 09/18 | Waning gibbous Aries → Taurus 6:05 PM | Until 6:05 PM: pruning; weeding and cultivating; pest control; harvesting for storage From 6:05 PM: planting root crops, tubers and bulbs (6:05 PM–10:00 PM); pruning; fertilizing; pest control; harvesting for storage | Until 6:05 PM: sowing and planting; transplanting From 6:05 PM: sowing above-ground crops |
| Sun 09/19 | Waning gibbous Taurus | Planting root crops, tubers and bulbs; pruning; fertilizing; pest control; harvesting for storage | Sowing above-ground crops |
| Mon 09/20 | Waning gibbous Taurus | Planting root crops, tubers and bulbs (6:00 AM–9:13 PM); pruning; fertilizing; pest control; harvesting for storage | Sowing above-ground crops; starting plantings 9:13 PM–midnight (void-of-course Moon) |
| Tue 09/21 | Waning gibbous Taurus → Gemini 1:06 AM | Pruning; weeding and cultivating; pest control; harvesting for storage | Sowing and planting; transplanting |
| Wed 09/22 | Waning gibbous Gemini | Pruning; weeding and cultivating; pest control; harvesting for storage | Sowing and planting; transplanting |
| Thu 09/23 | Last Quarter 6:20 AM Gemini → Cancer 6:02 AM | Until 6:02 AM: pruning; weeding and cultivating; pest control; harvesting for storage From 6:02 AM: planting root crops, tubers and bulbs (6:02 AM–10:00 PM); pruning; watering; fertilizing; pest control | Until 6:02 AM: sowing and planting; transplanting From 6:02 AM: sowing above-ground crops; harvesting for storage |
| Fri 09/24 | Waning crescent Cancer | Planting root crops, tubers and bulbs; pruning; watering; fertilizing; pest control | Sowing above-ground crops; harvesting for storage |
| Sat 09/25 | Waning crescent Cancer → Leo 9:00 AM | Until 9:00 AM: pruning; watering; fertilizing; pest control From 9:00 AM: pruning; weeding and cultivating; pest control; harvesting for storage | Until 9:00 AM: planting root crops, tubers and bulbs (void-of-course Moon); sowing above-ground crops; harvesting for storage From 9:00 AM: sowing and planting; transplanting |
| Sun 09/26 | Waning crescent Leo | Pruning; weeding and cultivating; pest control; harvesting for storage | Sowing and planting; transplanting |
| Mon 09/27 | Waning crescent Leo → Virgo 10:28 AM | Until 10:28 AM: pruning; weeding and cultivating; pest control; harvesting for storage From 10:28 AM: planting root crops, tubers and bulbs (10:28 AM–10:00 PM); pruning; fertilizing; pest control; harvesting for storage | Until 10:28 AM: sowing and planting; transplanting From 10:28 AM: sowing above-ground crops |
| Tue 09/28 | Waning crescent Virgo | Planting root crops, tubers and bulbs (6:00 AM–3:49 PM); pruning; fertilizing; pest control; harvesting for storage | Sowing above-ground crops; starting plantings 3:49 PM–midnight (void-of-course Moon) |
| Wed 09/29 | New Moon 10:36 PM Virgo → Libra 11:31 AM | Planning and seed preparation | Sowing and planting; transplanting; pruning; grafting |
| Thu 09/30 | Waxing crescent Libra | Sowing and planting flowers; fertilizing | Planting root crops and bulbs; pruning |
Calculated with Swiss Ephemeris, US Eastern Time · How we calculate →
How this calendar is made
The calendar follows the rules of traditional moon gardening. The Moon's phase and sign are calculated for every day in Eastern Time, and the same rules turn them into recommendations for every month.
- Waxing Moon (new moon to full moon). By tradition this is the time to sow and plant crops that bear above the ground: leafy greens, cabbage, cucumbers, tomatoes, peppers, beans, berries, trees and shrubs. Grafting and repotting houseplants also go here.
- Waning Moon (full moon to new moon). The time for root crops, tubers and bulbs: carrots, beets, potatoes, radishes, onions and garlic. It is also the traditional time for pruning, pest control and harvesting crops you plan to store.
- New moon, full moon and eclipses. On these calendar days (Eastern Time) tradition gives plants a rest: no sowing, planting, transplanting or pruning.
- Fertile signs. Cancer, Scorpio and Pisces are the most fertile; Taurus, Virgo and Capricorn are also good for sowing and planting. Libra favors flowers.
- Barren signs: Aries, Gemini, Leo, Sagittarius and Aquarius. These days are for weeding, cultivating, pest control and harvesting rather than sowing.
- Void-of-course Moon. Tradition avoids starting plantings while the Moon is void of course. Sowing, planting, repotting and grafting are listed only when at least 2 hours between 6:00 AM and 10:00 PM ET stay free of it; when the day is cut short, the open window is shown in brackets next to the task.
- Watering and fertilizing. Tradition singles out the water signs (Cancer, Scorpio and Pisces) for watering; on other days water by the weather and the soil. Fertilizing goes on days when the Moon is in a fertile sign or in Libra.
When the Moon changes sign between 6:00 AM and 10:00 PM ET, the tasks are listed separately before and after the change; an overnight change counts toward the sign the Moon spends the day in. Outdoor timing still depends on your USDA hardiness zone and your local frost dates, so use the Moon to pick days within the season that suits your area.
Frequently asked questions
When should I start seeds in September 2027?
By moon gardening tradition, sowing and planting above-ground crops fits September 1 (6:00 AM–9:29 PM), 4, 5 (6:00 AM–3:06 PM), 9, 10, 14 (Eastern Time). The best days are September 4, 5 (6:00 AM–3:06 PM), 14, when the waxing Moon passes through Cancer, Scorpio or Pisces.
When should I plant root crops and bulbs in September 2027?
Carrots, beets, potatoes, onions, garlic and other root crops, tubers and bulbs traditionally go in on a waning Moon in a fertile sign: in September 2027 that is September 18 (6:05 PM–10:00 PM), 19, 20 (6:00 AM–9:13 PM), 23 (6:02 AM–10:00 PM), 24, 27 (10:28 AM–10:00 PM), 28 (6:00 AM–3:49 PM).
Which days in September 2027 are bad for planting?
Rest days with no planting: September 15 (full moon), 29 (new moon). On September 7, 12, 17, 21, 22, 26 the Moon spends the whole day in barren signs, and tradition advises against sowing or planting. Plantings are also not started during void-of-course hours, which are listed in the table.
When should I prune trees and shrubs in September 2027?
Tradition prunes on a waning Moon outside the rest days: September 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28.
Why do moon planting dates differ between calendars?
Calendar makers use different rules. Some look only at the phase, others only at the sign; some skip the days around the new and full moon, others only the calendar day itself. The time zone matters too: a calendar made for another zone can put the Moon's change of sign on a neighboring date. This calendar uses Eastern Time, and its rules are listed on this page.
See also: lunar calendar for September 2027 with void-of-course hours for every day.
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