Gadenin日本語Get the appThree plant types under one name
Seed sold for eating flower shoots is not one plant. It spans several closely related brassicas, and the differences are large enough to change how you grow and cut them. Packets rarely say which type you have in so many words, so it is worth learning to read the description and, after one season, to recognize the plant.
The leafy type makes a broad, soft rosette and produces a slender flower stem carrying a small bud cluster with several leaves attached. You eat stem, leaves and buds together, and the flavor is mild and sweet. The stem type makes an upright plant with a noticeably thicker, fleshier main shoot and fewer leaves on it, closer in eating quality to a sprouting broccoli. The third type is a shoot-focused strain that stays small in leaf but pushes side shoots in unusual numbers.
In practice most gardens want a leafy or mixed type for the long, generous flush, and a stem type only if the thick main shoot is what you are after. The shoot-focused strains are the best choice for a small bed being cut hard over many weeks.
| Type | Plant habit | What you cut | Best suited to |
|---|---|---|---|
| Leafy | Broad soft rosette, slender stems | Stem, leaves and buds together | Long flush; mild flavor; general use |
| Thick stemmed | Upright, fleshy, fewer leaves | Substantial main shoot, then sides | One big cut plus a shorter flush |
| Shoot focused | Compact leaf, many joints | Numerous small side shoots | Small beds cut hard over many weeks |
| Leaf and shoot dual | Vigorous, large | Leaves in autumn, shoots in spring | Two crops from one long occupancy |
Early and late strains are a real difference
Within every type, strains differ in how much cold they need before they will run to bud and how quickly they respond to lengthening days. Early strains bud with relatively little chilling and can be cutting several weeks ahead of the rest. Late strains hold in leaf longer, then come with a larger plant behind them and usually a heavier total flush.
The practical use of this is to grow both. An early strain and a late strain sown on the same day will spread your harvest over a much longer period than two sowings of the same strain a fortnight apart, because the sowing date has far less influence on bud timing than the strain's chilling requirement does.
Be aware that an early strain sown too early in a mild autumn can bud before winter. That is not a disaster, and the shoots are edible, but it wastes the plant. If you see buds forming in autumn, cut them out and the plant will usually go back to making leaves until spring.
What to look for on the seed description
Packets describe these plants inconsistently, but a few phrases reliably tell you what you are getting. Wording about tender leaves and stems together points to a leafy type. Wording about a thick or substantial main shoot points to a stem type. Anything emphasizing repeat picking or numerous side shoots is a shoot-focused strain, and that is usually what you want for a home bed.
Descriptions mentioning cold hardiness or overwintering are telling you the strain is meant for the autumn-sown, spring-cut cycle. Descriptions emphasizing speed and a short time to harvest are usually for a late-winter or spring sowing cut once, which is a legitimate crop but a completely different one.
Ignore anything about leaf color or ornamental value. It has no bearing on the eating quality of the shoots, which is determined almost entirely by whether you cut at tight bud.
Do not save your own seed from these plants unless you are isolating them. They cross freely with other brassicas that flower at the same time, and the seedlings from a mixed garden are unpredictable in both bud timing and eating quality.
Choosing by how you will actually pick
The honest question is not which type is best but how often you will be in the garden. A shoot-focused strain rewards someone who walks the bed every second day for a month and punishes someone who visits at weekends, because dozens of small shoots open unattended. A thick-stemmed type suits a weekend gardener better: fewer, larger shoots, a slower clock, and less lost if you miss a couple of days.
Space matters too. If you have room for twenty plants, a mixture of an early and a late strain gives a harvest stretching over two months. If you have room for six, choose one shoot-focused strain, space them generously and feed them hard, and take everything from repeat cutting on a small number of well-grown plants.
Record which strain did what
Note, for each strain you grow, the date buds first appeared, the thickness of the main shoot, and how many weeks the flush lasted. After two seasons this tells you more about what suits your garden than any description will, because chilling requirement interacts with your particular winter and nobody else's.
Mark the positions in the bed as well when you grow two strains together, and label them properly. They look similar as rosettes in autumn and completely different at harvest, and by then you will have forgotten which row was which.