Gadenin日本語Get the appHow the year runs
A persimmon is a late tree at both ends. It breaks bud later in spring than most fruit trees, which is one reason it so often escapes the frost that ruins earlier blossom, and it holds fruit far into autumn, long after the leaves have colored and dropped. Between those two points there is remarkably little to do.
The whole year comes down to four moments. Late winter is when you prune, removing whole branches and never shortening the shoot tips that carry next season's fruit. Spring, through bud break and bloom, is when you do nothing at all. Early summer, after the natural fruit drop has finished, is when you thin the crop and prop the limbs. Autumn is when you pick, and how you pick depends entirely on whether your fruit is astringent or not.
Everything else, watering, mulching, checking the tree, is background maintenance that runs continuously. If you only ever get four jobs right, get those four right and the tree will look after itself.
| Stage | What the tree is doing | Your job | Do not |
|---|---|---|---|
| Dormancy, deep winter | Fully dormant, wood exposed | Plan. Order and plant bare-root trees | Prune in the hardest cold |
| Late winter | Buds still tight | Main pruning: thin whole branches | Shorten shoot tips |
| Bud swell to bud break | Buds swelling, shoots emerging | Spread a light spring feed if needed, mulch | Prune, or feed heavily |
| Bloom | Flowers on new shoots from last year's wood | Nothing. Keep water steady | Work in the canopy |
| Early summer | Natural fruit drop | Watch and let it happen | Thin before the drop finishes |
| After the drop | Fruit sizing | Thin to one fruit per six inches, prop limbs | Let a dry spell run |
| Midsummer | Fruit sizing fast | Deep, steady watering. Remove water shoots | Feed nitrogen |
| Late summer | Color beginning | Ease off watering slightly. Plan netting | Soak a dry tree suddenly |
| Leaf color and fall | Leaves drop, fruit stays | Nothing. This is normal | Treat it as disease |
| Harvest | Fruit fully colored | Pick by type: firm and hard, or leave to hang | Pull fruit off by hand |
| After harvest | Moving reserves to roots | Clear fallen fruit and leaves. Record the season | Prune hard |
Dormancy to bud break
Winter is the only time you can see the structure clearly, and it is when the year's pruning happens. Wait until the hardest cold has passed but the buds are still tight. Work through in order: dead and damaged wood, crossing branches, narrow crotches that will split, then thinning of crowded areas by removing whole branches at their base. Never head back the shoot tips, because the fruiting shoots grow from buds near the tip of last year's growth.
This is also the window for planting. Bare-root trees go in during dormancy, set so the graft union stays three to four inches (8-10 cm) above the finished soil, with the taproot hanging straight rather than curled.
As the buds begin to swell, top up the mulch to two or three inches (5-8 cm) over the whole root area and keep it clear of the trunk. If extension growth last season was under six inches (15 cm) with pale leaves, this is the one moment in the year to give a balanced feed. If growth was healthy, give nothing; overfeeding a persimmon costs you fruit later.
Bloom and the early drop
Flowers appear on the short new shoots that push from near the tips of last year's wood, so bloom arrives on growth that is only a few weeks old. Persimmons are largely self-fertile and most home trees set fruit without a pollination partner and without your help, so at bloom the correct action is genuinely to do nothing. Stay out of the canopy: the new shoots are soft and easily knocked off.
Keep soil moisture even through bloom and the weeks after. This is the period when a swing between dry and soaked does the most damage.
A few weeks after bloom the tree begins shedding fruit, and it sheds a lot. Small, yellowing fruit falls in numbers that look catastrophic. This is the tree deciding what it can carry, and on a young tree it may take the whole crop. Do not react, do not feed, and do not thin. Note the date it starts and roughly how heavy it is, because the timing of this drop is one of the most useful things you can know about your own tree.
If a second, later drop follows on much larger fruit, that one is a message. Look first at your watering, then at whether you fed the tree, then at whether anything disturbed the roots.
Sizing through summer
Once the natural drop has stopped for a week, thin the crop. Leave one fruit roughly every six inches (15 cm) of fruiting shoot, reduce every cluster to one, and take the outermost fruit off long limbs where the leverage is worst. Snip the stalk rather than pulling. This is the job that both prevents split limbs and reduces the tree's swing into alternate bearing.
At the same time, prop any limb that has begun to bend, using a padded fork, and cut out the vertical water shoots rising from the tops of the main limbs. Those two jobs plus the thinning are the whole of the summer work.
Water deeply and infrequently through this period, wetting the soil twelve inches (30 cm) down and then waiting until the top three inches (8 cm) dries. From the end of the drop until the fruit starts to color is the critical window; a drought here costs the crop, not just the growth. Give no nitrogen after midsummer, because soft late growth will not harden before the cold and it is exactly what breaks on a brittle tree.
Color, leaf fall and harvest
As the fruit begins to color, ease back the watering to steady rather than generous. A flood of water into ripening fruit encourages splitting at the calyx end. This is also the moment to get netting ready, because birds find coloring persimmons before you decide they are ripe.
The leaves will color brilliantly and fall well before the fruit is ready. A bare tree hung with orange fruit is correct and healthy. From then on the fruit is fully exposed, to birds, to wind and to your own view of how the crop is developing.
Harvest depends entirely on type. Astringent fruit is cut off at full even color while still hard, then softened or treated indoors; there is nothing to gain by leaving it hanging, and every extra week risks wind, birds and a limb break. Non-astringent fruit stays on the tree as long as the weather allows, because hanging time in warm autumn sun is what removes its tannin and builds sugar. Both are cut with pruners, never pulled, with the calyx left attached and the stalk trimmed flush afterwards. Pick everything before a hard freeze.
Closing the season and the record
After harvest, clear every fallen fruit and rake up the leaves, which removes the overwintering sites for leaf spot and stops wasps and rodents settling in. Do no significant pruning now; cuts made in autumn do not seal before the cold. The exception is a broken limb, which should be cut back cleanly to a collar whenever it happens.
Then write the season down while it is fresh. The entries that pay for themselves are the bloom date, the date the early drop began and how heavy it was, the date and number of fruit you thinned to, the date of the first pick, a rough weight or count of the crop, the extension growth measured on a few shoots at leaf fall, and any limb that broke and where.
Persimmons run on a two-year rhythm, heavy then light, and they respond to the previous season more than to the current one. Nothing in that list tells you much on its own. Three years of it tells you which half of the cycle you are in, whether your thinning is working, whether the dry years are the light-crop years, and when to expect the birds. It is the difference between managing a tree and reacting to it.