Gadenin日本語Get the appThe dying tops are the signal, and they do not mean the plant is dead
In early summer the tops of every clump yellow, flop and dry to straw. Gardeners meeting this crop for the first time conclude they have killed it and dig the bed over. They have not. This is a summer-dormant plant: it grows through the cool months and shuts down through the hot ones, exactly the reverse of most vegetables, and everything it needs is stored safely in the bulbs underground.
Wait until the tops are properly down before lifting, not just yellowing at the tips. The final weeks of die-back are when the plant moves the last of its reserves into the bulbs, and a clump lifted while it still has green leaf gives soft bulbs with a thin skin that shrivel in storage.
If the summer is wet, lift as soon as the tops are down rather than leaving the bulbs sitting in warm damp soil. Bulbs left in wet ground through a hot summer rot in place, and you lose the stock.
Lift and split the clump
Lift on a dry day when the soil itself is dry, so it falls away from the bulbs instead of caking on. Push a fork in a hand's width outside the clump and lever gently upwards, taking the whole clump in one lump. Do not pull on the dead tops, which will simply tear off and leave the bulbs in the ground.
The clump breaks into individual bulbs with your fingers. A bulb planted the previous autumn will typically have become six to a dozen, packed together and sharing a base. They separate cleanly along natural lines; if you have to force a pair apart, twist rather than tear so you do not damage the base plate that the new roots will come from.
- Fork the whole clump out intact Work a fork in four inches (10 cm) outside the clump and lift from underneath. Lifting the clump whole means you are not stabbing bulbs, and any damaged bulb rots rather than curing.
- Shake, do not wash Knock and shake the dry soil off with your hands. Never wash bulbs you intend to store. Water on the skins makes curing take twice as long and invites rot in the neck.
- Separate into single bulbs Break the clump apart into individual bulbs, each keeping its own base plate and roots. Leave the dried tops attached for now; they can be trimmed after curing or used to tie bulbs into bunches.
- Discard anything soft Squeeze each bulb between finger and thumb. Firm bulbs cure; anything that gives, smells sour or shows a wet patch at the neck goes on the compost immediately. One rotting bulb ruins the tray around it.
- Sort by size as you go Put the biggest, firmest bulbs in one tray for replanting and the rest in another for eating. Deciding at lifting time is far easier than trying to sort a mixed tray weeks later.
Cure in shade with air moving
Curing is drying the skins and sealing the neck so the bulb can sit dormant without rotting. Spread the bulbs in a single layer on a slatted tray, a mesh rack or a sheet of chicken wire, somewhere airy, shaded and under cover. An open shed, a carport or a covered porch is ideal. Full sun scorches the outer scales and heats the bulbs, and rain undoes the whole job.
Two to three weeks is normal. The bulbs are cured when the outer skins are papery and rustle, the necks are tight and dry rather than fleshy, and the roots have shriveled to stiff threads. Test by rolling one between your palms: a cured bulb feels hard and light with loose skin, and an uncured one still feels heavy and slightly soft at the neck.
| Curing condition | Target | Consequence of getting it wrong |
|---|---|---|
| Location | Shaded, roofed, breezy | Sun scorches skins; rain restarts rot |
| Layer depth | Single layer, bulbs not touching | Piled bulbs sweat and the pile heats |
| Duration | Two to three weeks | Under two weeks the necks stay soft and rot in storage |
| Airflow | Constant, from underneath if possible | Still air leaves damp pockets between bulbs |
| Finish test | Papery skin, tight neck, stiff dry roots | Soft neck means it is not done |
Storing cured bulbs until autumn planting
Once cured, the bulbs need a cool, dry, dark and airy place until the soil cools enough to plant in autumn, usually a gap of six to ten weeks. Net bags, open baskets, mesh trays or the traditional braid all work, because all of them let air pass. Anything sealed is a mistake: plastic bags, sealed boxes and the refrigerator all hold moisture against the bulbs and start them rotting or sprouting.
Check the store every couple of weeks. Pull out anything soft, and if you find several bulbs sprouting early, plant them rather than fight it, even if the timing is a little ahead of your usual date. Sprouted bulbs will not go back to sleep, and they store no further.
Weigh or count the bulbs you keep back and write down how many clumps they came from. Comparing that increase from year to year is the quickest way to see whether the bed is still healthy or whether soil disease is quietly reducing your stock.
Keep the record that makes next year easier
Note four dates each summer: when the tops started yellowing, when they were fully down, when you lifted, and when the bulbs were cured and off the rack. Those four points define your local cycle, and after two seasons you can predict lifting week to within a few days rather than checking the bed hopefully every morning.
Alongside the dates, note how many bulbs each clump gave and how many you lost during curing. A sudden fall in the split rate or a rise in curing losses is an early warning that the ground is tiring or that disease is building, and it gives you a season's notice to move the bed.