Gadenin日本語Get the appThe shape of the season
This crop runs on heat, so its calendar is the opposite of true spinach. Nothing happens until the soil is warm, germination is slow and ragged, growth is unimpressive for the first month, and then from midsummer the plant runs hard and produces more than most households can eat until cold weather stops it. Knowing that shape stops you writing the row off in the slow weeks.
It also means the season has no bolting deadline in it. You are not racing to harvest before quality collapses, which is the whole reason for growing it. Once established, the plant simply produces until the weather ends it, and successional sowings are unnecessary.
There are four moments where a decision matters: sowing into genuinely warm soil, pinching early to force branching, moving to twice-weekly picking once capsules start forming, and clearing thoroughly at the end so it does not seed itself into next year. Everything between those is watering, feeding and picking on repeat.
| Stage | Trigger | Main job |
|---|---|---|
| Preparation | Two weeks before sowing | Dig in compost, clear slug shelter, plan the space |
| Sowing | Soil above 60F (16C) in the morning | Soak capsules a day, sow half an inch deep |
| Germination | Ten days to three weeks after sowing | Keep the surface damp, protect from slugs |
| Establishment | First month after emergence | Thin to one plant per station, first pinch at six inches |
| Running | Warm weather, plant branching out | Mulch, feed fortnightly, start picking tips |
| Full production | High summer heat | Pick twice a week, remove flowers and capsules |
| End | Nights in the mid-40s F (around 7C) | Final harvest, lift the plant, gather capsules |
Before and at sowing
The work that decides the season happens before the seed goes in. Choose the sunniest spot you have, since this plant takes full sun all day in heat that scorches other greens, and allow far more room than the seedling suggests, because each plant finishes the season covering two to three feet (60 to 90 cm) of ground. Dig two to three inches (5 to 8 cm) of well-rotted compost in a fortnight ahead.
Then wait for warmth. Sowing on the same date as your spring greens is the single most common mistake with this crop, and cold wet soil rots the capsule rather than germinating it. Take a morning soil reading two inches (5 cm) down and hold off until it holds above 60F (16C) for three days running.
Soak the capsules for twenty-four hours before they go in, changing the water once, and sow the same day you drain them. Half to three quarters of an inch (1 to 2 cm) deep, two capsules per station, stations eighteen inches (45 cm) apart. Then keep the surface damp for a full month, because emergence is spread out and the last seedlings need the same conditions as the first.
- Prepare the ground and the space Compost dug in two weeks ahead, and a clear decision about where you will let the plant sprawl. Marking out the circle it will occupy now stops you planting something else into that space in a month's time.
- Wait for the soil, not the date Read the soil at two inches (5 cm) depth in the morning for three mornings. Sow when it stays above 60F (16C). Every week you wait for warm soil you get back in germination rate and in seedlings that survive.
- Soak, then sow the same day Twenty-four hours in room-temperature water with one water change, then straight into the ground. A drained capsule left to dry out again is in worse shape than one never soaked.
- Protect and wait a full month Keep slugs off, keep the surface damp, and do not dig the row over because nothing has appeared at ten days. Uneven emergence over two weeks is how this crop germinates.
Where the season is short, start soaked capsules in three inch (8 cm) pots at 70F (21C) three to four weeks ahead and plant out once nights hold above 50F (10C).
The growing months
The first month after emergence looks unpromising. The seedling makes a few thick leaves and appears to be doing nothing while it builds roots. Do not respond by feeding heavily or assuming it has failed. Thin to one plant per station, keep the soil evenly moist, and keep slugs off it.
Once it has six inches (15 cm) of growth, pinch the tip out to force branching, then pinch each resulting shoot when it reaches six to eight inches (15 to 20 cm). Mulch two inches (5 cm) deep around the plant so the stems will have something dry to lie on, and begin a balanced liquid feed every two to three weeks. From here the routine settles: a deep soak twice a week in hot weather, daily in containers, and picking of shoot tips that doubles as pruning.
Midsummer brings the one change of task. Small flowers and hard green capsules start appearing in the leaf joints, and a plant carrying seed slows its leaf production. Move to picking twice a week and rub off any flowers and capsules you find as you go. It keeps the leaves coming for weeks longer and, just as importantly, keeps the capsules out of the soil.
| Job | How often | Notes |
|---|---|---|
| Deep watering | Twice a week, daily in containers | An inch (2.5 cm) at a time, at soil level, in the morning |
| Liquid feed | Every two to three weeks | Balanced feed once the plant is branching |
| Picking tips | Twice a week in warm weather | Top three to four inches (8 to 10 cm), a third of the plant at most |
| Removing flowers and capsules | Every picking from midsummer | Before the capsules harden and go brown |
| Looking under the mat | Weekly, more in wet spells | Rot and slugs both start on the underside |
| Checking the spread | Monthly | Cut back stems heading into other crops |
Closing the season and setting up the next
The end is abrupt rather than gradual. Growth stalls as nights fall into the mid-40s F (around 7C), the leaves toughen, and the first frost destroys the plant outright overnight. Take your final large harvest at the first genuinely cold nights instead of gambling on another warm spell.
Then clear properly, because this is the job that decides whether the crop is a pleasure or a nuisance next year. Cut the plant at the crown, take the top growth off the bed rather than digging it in, and rake up the hard brown capsules on the soil surface. Keep capsule-bearing material out of any compost you plan to spread. If you want your own seed, collect ripe capsules from one plant deliberately into a jar, dry them thoroughly and store them cool and dark; leaving them to fall is not seed saving.
Finally, write the season down while you still remember it. On this crop a handful of dates and two measurements are worth more in the second and third year than any general advice, because they are measured in your own soil and your own summer.
- Record the sowing conditions and the emergence spread Soak length, morning soil temperature on sowing day, first emergence date and last emergence date. Together these tell you exactly how early you can safely sow in your own garden.
- Record first harvest, first capsules and last harvest The first picking date gives you the length of the slow start. The week capsules first appeared is when picking must go twice weekly. The last picking date closes the window and tells you whether to sow earlier next year.
- Measure how wide each plant finished Note the final spread of each plant and where it overran what you allowed. This is the single most useful number for planning next year's bed, because almost everyone underestimates it the first time.
- Mark the bed for volunteers Note which bed the crop grew in. Walk it in early summer for the next two or three years and pull volunteers at the two-leaf stage, when it takes minutes rather than an afternoon.
If a bed grew this crop and was not cleared thoroughly, plan something there next year that you can weed easily. Volunteers coming up through a dense planting are far harder to deal with than volunteers in an open bed.