Gadenin日本語Get the appWhat you are actually planting
Asatsuki is a chives-type bunching allium (Allium schoenoprasum var. foliosum) grown for its fine hollow leaves. Unlike ordinary chives, it builds a real bulb at the base of every shoot, and that bulb is the unit you plant. A bag of planting stock looks like a handful of tiny white or pale pink onions the size of a pea to a small hazelnut, often still joined in twos and threes.
This changes the planting job completely. You are not raising seedlings and waiting; you are setting dormant storage organs into ground that will be cool and damp for the next few months. Each bulb makes one shoot, that shoot splits into a clump, and by the second season a station planted with three bulbs is a fist-sized cluster of twenty or more leaves.
Firm, dry bulbs with an intact papery skin are what you want. Soft ones, or any showing blue-green mold at the neck, rot in the ground instead of rooting and are not worth planting.
Timing: plant into cooling soil
The natural planting window is late summer into early autumn, once the worst heat has broken and soil temperature has dropped back to around 68F (20C) and falling. Bulbs planted then push roots for six to eight weeks before growth stops, and those roots are what give you an early, thick flush of leaves at the first warm spell.
Late winter or early spring planting also works and is the right choice in areas where the ground freezes hard. Spring-planted bulbs give a thinner first year because they spend the season building roots and leaves at the same time. Either way, avoid planting into hot soil above 77F (25C); the bulbs sit and sulk, and some simply rot.
| Planting window | Soil condition | What to expect |
|---|---|---|
| Late summer to early autumn | Cooling, above 50F (10C), evenly damp | Best option. Roots before winter, heavy leaf flush at the first warmth |
| Late winter to early spring | Workable, not frozen or waterlogged | Reliable in cold areas. Lighter first-season cropping |
| Midsummer | Hot, above 77F (25C) | Avoid. Bulbs are naturally dormant and rot rather than root |
Soil and bed preparation
Asatsuki wants loose, free-draining soil with steady moisture, and it hates sitting wet in winter. Fork the bed over to a spade's depth, break up any pan, and work in two to three inches (5 to 8 cm) of well-rotted compost. On heavy clay, raise the bed four to six inches (10 to 15 cm) rather than trying to improve the whole profile in one season.
Target a soil pH of 6.0 to 7.0. Alliums grown below pH 5.5 stay stunted and yellow no matter how much you feed them, so if the bed has been under acid-loving crops, test it and lime in the season before planting. Do not add fresh manure. It pushes soft, floppy leaf growth and raises the risk of neck rot.
- Clear perennial weeds completely Asatsuki is a permanent planting that stays put for three or four years. Any couch grass or bindweed root left in the bed will grow up through the clumps where you can never get it out. Clear the ground first, even if it costs you a season.
- Work compost into the top six inches Spread two to three inches (5 to 8 cm) of well-rotted compost and fork it into the top six inches (15 cm). The roots are shallow and fibrous, so surface soil quality matters far more than depth.
- Rake to a fine, level surface The bulbs are small and planted shallow. A cloddy surface leaves air pockets around them and they dry out before rooting. Rake until the top inch is crumbly and even.
Depth, spacing, and setting the bulbs
Plant shallow. The tip of each bulb should sit about one inch (2.5 cm) below the surface, with the neck pointing up. Deep planting is the single most common mistake with this crop: bulbs buried three or four inches down come up late, come up thin, and the white bases stay soft and rot-prone.
Set two to three bulbs per station in a tight triangle, and space stations six to eight inches (15 to 20 cm) apart with ten inches (25 cm) between rows. Grouping the bulbs is deliberate. A single bulb takes two years to look like anything; three together give you a cuttable clump in the first season and thicken from there.
- Make a shallow drill or dibbed hole Draw a drill about one and a half inches (4 cm) deep, or dib individual holes. You want the bulb sitting on firm soil at the bottom, not dangling in a cone of air.
- Set bulbs neck up, three per station Place two or three bulbs an inch (2.5 cm) apart within each station. Press each one just enough to seat it. Do not screw it into the ground; that compacts soil under the base plate and roots struggle to get out.
- Cover with one inch of soil and firm lightly Draw fine soil back over the bulbs so the tips are about an inch (2.5 cm) down, then firm with the flat of your hand. The necks should be covered but not buried deep.
- Water in once, then leave alone Give the bed a thorough soak to settle soil around the bulbs. After that, keep it merely damp until shoots appear in two to four weeks. Wet, shootless soil is where bulbs rot.
In containers, use a pot at least eight inches (20 cm) deep and the same across, with free-draining potting mix. Six to nine bulbs in a ten inch (25 cm) pot gives a clump you can cut from all season.
The first weeks, and what to write down
Shoots appear in two to four weeks in cool soil. Keep the bed weeded by hand while the leaves are thread-fine, because asatsuki cannot compete with anything at that stage. Do not cut a single leaf in the first eight weeks after planting; every leaf you remove is energy the bulb needs to rebuild.
Record the planting date, how many bulbs went into each station, and the exact position of each row. Once the leaves die back in high summer the bed looks completely empty, and gardeners routinely fork over their own dormant asatsuki or plant something else on top of it. Note the date shoots first broke ground as well; comparing that against your planting date over two or three years tells you whether you are planting too late for your ground.