According to almanac tradition, spinach is a leaf crop, and leaf crops are planted in the first quarter of the Moon, from new moon to first quarter. Gardeners who also follow the Moon’s sign look for a fruitful or semi-fruitful one. The traditional days for 2026 and 2027 are:
- October 2026: October 10-13 and October 16-18
- March 2027: March 8 and March 11-13
- April 2027: April 8-9 and April 12-13
- September 2027: September 2-5 and September 30
- October 2027: October 1-3, October 6 and October 29-30
No effect of the Moon on spinach has been proven, and your state’s calendar always comes first.
What the tradition says about planting spinach
The almanac rule is built on the Moon’s phase cycle, which lasts 29.53 days. Tradition cuts that cycle into four quarters and gives each one a kind of garden work. Spinach belongs with the leafy crops that bear above ground, a group that also names lettuce, cabbage, broccoli and celery. For all of them, the traditional window is the first quarter, between the new moon and the first-quarter moon. Gardeners who plant by the Moon treat that stretch as the time to sow spinach. Other gardeners plant on the calendar alone.
| Crop type | Traditional quarter | Examples in the almanac rule |
|---|---|---|
| Leaf (spinach is here) | First quarter, new moon to first quarter | Lettuce, spinach, cabbage, broccoli, celery |
| Fruit (seed inside the fruit) | Second quarter, first quarter to full moon | Tomatoes, peppers, beans, squash, corn |
| Root, bulb, perennial | Third quarter, full moon to last quarter | Potatoes, carrots, garlic, onions, beets |
The fourth quarter, from last quarter to new moon, is the traditional rest period for weeding, pruning, turning the soil and composting. For more on how the four quarters fit together, see our guide to planting by the moon.
A second layer comes from the Moon’s sign. Many gardening almanacs label Cancer, Scorpio and Pisces fruitful, and Taurus, Libra and Capricorn semi-fruitful. They label Aries, Gemini, Leo, Virgo, Sagittarius and Aquarius barren, though sources differ on Virgo, Sagittarius and Aquarius. The windows on this page combine the first-quarter rule with the fruitful and semi-fruitful labels.
The science does not back any of it. The Moon’s tidal pull at the Earth’s surface is about 1.1 millionths of a meter per second squared at its strongest. That is roughly one ten-millionth of gravity (1.1 x 10-7 g), far too small to move anything as small as a seed or a root. Treat the custom as an old almanac habit, not as a mechanism.
Traditional spinach planting days, 2026 and 2027
Every date below follows the rule above, read at noon Eastern time (ET). Where a row shows two signs, such as Libra/Scorpio, the Moon moves from one to the other during the run.
| Month | Traditional days | Moon sign |
|---|---|---|
| October 2026 | October 10-13 October 16-18 |
Libra/Scorpio Capricorn |
| March 2027 | March 8 March 11-13 |
Pisces Taurus |
| April 2027 | April 8-9 April 12-13 |
Taurus Cancer |
| September 2027 | September 2-5 September 30 |
Libra/Scorpio Libra |
| October 2027 | October 1-3 October 6 October 29-30 |
Libra/Scorpio Capricorn Scorpio |
The months shown are those when gardeners in much of the country plant spinach. Your state may start earlier or later, so only the rows that fall inside your state’s own window count. A row that sits outside it is not one to use.
Treat the first and last day of every run as soft edges. Days are read at noon ET, and the Moon changes sign during the day, so a date at the edge of a run may sit partly outside the window. West of the Eastern time zone, the clock hour of the change shifts as well.
Reading the sign labels
The signs in the table tie back to the convention described earlier. This convention labels Scorpio, Cancer and Pisces fruitful, which covers the Scorpio part of the September and October 2027 runs, the April 12-13 run and the March 8 entry. It labels Libra, Taurus and Capricorn semi-fruitful, which covers the remaining entries. The September 30 and October 1-3 rows of 2027 sit back to back across the month line, so a gardener who follows the Moon could treat them as one stretch.
For a month-by-month look at the Moon’s phases, signs and quarters, the October 2026 moon calendar shows each day of that month. The first-quarter rule also sits inside the larger idea of planting in a waxing moon.
Check your state first: when to plant spinach where you live
The order of decisions matters more than any single date on this page. Start with your state’s planting calendar for spinach. It tells you which weeks are open for your climate and your zone. Only after that, if you like the idea, bring in the Moon to pick among the days that are already open to you.
Frost dates and soil temperature decide whether spinach can go in the ground. The Moon, for gardeners who follow it, only chooses among days the local calendar has already allowed. A traditional day that falls outside your state’s window is simply not a planting day for you, however neatly it fits the almanac rule.
Our page on when to plant spinach where you live carries the practical side: the planting windows, the soil conditions and the local timing. This article deliberately gives none of those numbers, because that page owns them and keeps them current. The state guides go further and cover each state’s own conditions in more detail, which is useful if your yard sits near the edge of a climate zone or a state line.
Here is a short way to use both pages together:
- Read the spinach planting page and note your state’s open weeks.
- Look at the table above and keep only the traditional days that fall inside those weeks.
- If no traditional day fits, plant on the calendar alone.
That last step is not a failure of the method. Almanacs themselves say the Moon is an optional extra, and gardeners who follow it still sow on ordinary days when the weather and the calendar call for it.
A fair way to try it
If you are curious whether the tradition shows anything in your own garden, a small side-by-side trial is the only way to find out. Here is one way to set it up:
- Choose a week inside your state’s planting window that contains at least one traditional day from the table. Prepare two rows or two beds as alike as you can, with the same seed packet, the same soil and the same watering.
- Sow one row on a traditional day and the other on an ordinary day in that same week. Label both rows with a stake that shows the sowing date and the word “tradition” or “ordinary.”
- Write down the date you first see seedlings in each row, then the date of your first harvest and how each row looked on that day.
- Keep the notes in one place, and repeat the trial the next time you sow if you want a longer record.
Be honest about what this can show. One season will not settle anything, because weather, light and small differences between two rows can outweigh any effect of the Moon. Several seasons of notes would tell you more, though even those would describe your plot alone. Still, a trial like this is the only way a home gardener can judge the custom for their own soil. It also keeps the practice honest: you are testing a tradition, not assuming it.
Questions about planting spinach by the moon
Does the tradition say to plant spinach in a waxing or a waning moon?
According to almanac tradition, spinach goes in during a waxing moon, and during the first quarter, between the new moon and the first-quarter moon. The waning half of the cycle is traditionally given to root crops in the third quarter and to rest work in the fourth. The first-quarter rule is the one behind every date in the table above.
What if a traditional day falls on a frost?
The almanac rule has no answer to that, because it only looks at the Moon. Your state’s planting calendar comes first, so a traditional day that lands on a hard frost is a day to skip. The spinach planting page and the state guides cover the practical timing, and you can wait for the next traditional day inside your window.
Do I need to follow the Moon sign as well?
No. The phase rule is the older and simpler part of the tradition, and the sign is an extra layer. The days in the table already include it, but you can ignore it and use any day in the first quarter. Gardeners who follow Maria Thun’s biodynamic scheme use a different set of labels. That scheme names Cancer, Scorpio and Pisces as leaf days, so it would narrow the list above to the rows that name those signs.