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This crop occupies ground for a long time, six to eight months for an autumn sowing, and almost all of that is quiet. The work is concentrated into two short bursts: about six weeks of establishment at the end of summer, and four to seven weeks of intensive cutting at the other end. In between the plant simply sits, and the job is to keep it alive and unstressed.
That long, quiet middle is what makes the crop worth its space. It comes ready in the gap between the last of the stored winter vegetables and the first of the spring sowings, when there is very little else to cut. Planning for it means accepting that a bed is committed from late summer until well into spring.
| Stage | When | Main job | Decision point |
|---|---|---|---|
| Sowing | Once summer heat breaks | Sow or start modules; mesh against flea beetles | Ten weeks before hard frost is the last useful date |
| Establishment | First six weeks after sowing | Thin, transplant, feed nitrogen, water well | Aim for a stocky ten to sixteen leaf rosette |
| Hardening | As nights drop below 45F (7C) | Stop nitrogen; firm plants; clear litter | Soft growth now means winter losses |
| Winter holding | Coldest months | Protect the crown, ventilate covers, watch slugs | Pull anything with a soft crown |
| Bud up | As days lengthen | First liquid feed; mulch; begin checking closely | Crowded upright center is the signal |
| Main harvest | Late winter into spring | Cut every two or three days; feed fortnightly | Cut at tight bud, never at open flower |
| Clearing | When shoots emerge already colored | Pull plants; compost; sow the next crop | Do not leave spent plants flowering nearby |
Establishment is where the yield is decided
The six weeks after sowing set the ceiling on everything that follows. The plant is building the leaf joints that will become side shoots, and it can only build them while it is warm. A plant that reaches a stocky rosette the width of a dinner plate before growth stops will carry a harvest of four to seven weeks. A plant that is still a seedling when the cold arrives will give you one thin shoot and finish.
So this is where the water and the nitrogen go, and where you accept the trouble of mesh against flea beetles. It is also where the thinning has to be done properly and on time, because crowded plants at this stage never catch up. Nothing you do in spring compensates for a poor autumn.
If you are running late, sow anyway but change your expectations: space more closely, treat it as a single-cut crop, and plan a second sowing in late winter for a following spring harvest that will be smaller but useful.
The harvest weeks demand a rhythm
From the first main shoot, this stops being a crop you visit and becomes one you patrol. Buds open within a day or two in mild weather, so a fixed two- or three-day rhythm is the only way to keep ahead of it. Skipping a week during the flush does not delay the harvest, it destroys a chunk of it, because the shoots that opened are gone and the plant has begun to shut down.
Pair each visit with the two other jobs that matter: look into the crowns for aphids, and take out any shoot that has gone past. Feed every ten to fourteen days throughout. Those three habits together roughly double the length of the harvest compared with cutting when you happen to remember.
Plan what happens to the gluts. The peak week of a good bed produces far more than a household eats fresh, and blanching and freezing takes minutes. The alternative, letting the surplus stand on the plant, ends the whole harvest early.
- Walk the bed every second or third day Daily in warm weather. Cut everything at tight bud, including small shoots. The rhythm, not the calendar, is what keeps the flush going.
- Check the crowns while you cut Turn back the newest leaves and look for gray aphid colonies. Cut out and remove any colonised shoot immediately rather than dropping it in the bed.
- Feed every ten to fourteen days A nitrogen-leaning liquid feed on damp soil. Each cut asks for a new shoot to be built from a leaf joint, and unfed plants run out of material after three rounds.
- Clear a plant the moment it is spent When new shoots emerge already colored and finger-length, the plant is finished. Pull it. Leaving it in flower feeds aphids and delays whatever follows in that bed.
Records that make next year's timing better
Four dates capture the entire season: the sowing date, the date growth visibly stopped in autumn, the date the first buds appeared, and the date of the last usable cut. Written down for two seasons, they let you shift the sowing date deliberately instead of guessing, and they show immediately whether a disappointing year was a late sowing, a hard winter or a feeding failure.
Add the rosette size going into winter, even roughly, as the width across the leaves. That one measurement correlates more strongly with the size of the harvest than anything else you can record, and it is available months before the crop, which means you still have time to act on it by sowing a second batch.
Where winters are too severe for plants to stand outside, the same crop works from a late-winter sowing under cover, harvested in mid to late spring. The flush is shorter because the plants have less time to build leaf joints, but every other rule is unchanged.