Gadenin日本語Get the appLate winter: prune, clean and check the pair
The plant is bare and dormant, and this is the only comfortable time to work on it. Take out dead wood, crossing branches and anything growing back into the center, and shorten shoots that spoil the shape. Keep the total removed to well under a quarter of the framework; hard cuts into old wood often fail to resprout on this shrub. Wear gauntlets, because the paired thorns at the leaf joints are just as sharp on bare wood.
With the leaves gone, every stem is reachable, so this is also the moment to run a cloth along the thin wood and rub off scale insects before they hatch a new generation. Clear old leaves and any mummified berries from under the plant, and check that the mulch has not built up against the trunk itself.
If you are growing for peppercorns, confirm now that you still have both a male and a female plant and that both are alive. Losing the male over winter without noticing is a common way to get a fruitless summer from a female that has cropped for years.
Spring: bud break, flowering and the pollination window
As buds swell, spread an inch or two (3 to 5 cm) of compost or leaf mold over the root zone, laid on the surface and never dug in, and give container plants their slow-release feed. Do not cultivate the soil. From this point until autumn, the ground under the plant should be touched only to pull the occasional weed by hand.
Flowering is brief, small and green-yellow, and easy to miss entirely. It is also the single most important fortnight of the year on a female plant, because everything you harvest in summer and autumn depends on pollen reaching it then. Note the dates both plants flower. A late frost during this window, or a male that opens a week after the female has finished, costs you the entire crop.
The first leaf harvest overlaps flowering. Take young leaves once the shoots have finished extending and the leaflets are soft and fully open, spreading the picking across the plant. Flower sprays can be cut at the same time from a male plant freely and from a female sparingly, since every spray you take is a cluster of berries you will not get.
| Season | Main jobs | The thing that matters most |
|---|---|---|
| Late winter | Prune lightly, remove scale, tidy beneath | Confirm both male and female plants are alive |
| Early spring | Mulch the root zone, feed containers | Never dig or hoe near the trunk |
| Mid spring | Pick young leaves, watch the flowers | Record the flowering dates of both plants |
| Early summer | Pick green berries, check tips for caterpillars | Test a berry before picking the whole crop |
| High summer | Water containers deeply, shade the pot | Never let the root ball dry out completely |
| Autumn | Harvest and dry splitting husks | Wait for the husks to start splitting |
| Early winter | Reduce watering, protect containers | Do not water on a summer rhythm |
Early and high summer: berries, caterpillars, water
Green berries reach picking size in early summer, and the window is short. Cut a test berry open: a soft, pale seed inside means pick now, a hard black one means the moment has gone and you are now growing for the autumn husk harvest instead. Cut whole clusters with a stub of stalk rather than pulling individual berries.
This is also caterpillar season. Check the soft shoot tips twice a week from late spring onward for pale round eggs and for the small dark caterpillars that mimic bird droppings. On a mature shrub you can ignore them; on anything under three feet (90 cm) pick them off, because a young plant stripped twice in a season may not recover.
Through high summer the job is water and shade. Containers dry out in two days in a warm spell and a single complete dry-out is often fatal. Water thoroughly when the compost is dry two inches (5 cm) down, keep the mulch topped up, and shade the pot itself from afternoon sun rather than just the leaves. In open ground, a slow bucketful at the drip line once a week is enough in genuine drought.
Autumn and early winter: husks, then leave it alone
Berries left on a female plant color from green to dull red-brown through autumn and eventually split to show a single black seed. Wait until a good number on each cluster have started to split, then cut whole clusters and dry them in a single layer somewhere warm, airy and out of direct sun for several days. Rub the dried clusters, winnow the light husk fragments away from the heavy seeds, and store the husks whole and sealed in the dark. The black seeds are discarded.
As the leaves color and fall, cut watering right back. A dormant plant in a container needs a check every two or three weeks and only enough water to keep the compost just short of dry. Move containers to a sheltered spot against a wall and wrap the pot rather than the plant, since the root ball freezes right through where roots in open ground would not.
Resist the urge to tidy the root zone. Autumn is exactly when people dig borders over, and a plant that dies the following summer was very often damaged during that clear-up. Rake fallen leaves off the surface if you want, but leave the mulch and the soil beneath it undisturbed until spring.
If you are planting a new shrub, do it while it is dormant and plant it where it will stay. This species resents root disturbance so strongly that an established plant rarely survives being moved, so the position you choose now is permanent.
The four dates worth writing down every year
Four dates turn this calendar from generic advice into a plan tuned to your own garden. Write down the date buds break, the dates each plant flowers, the date green berries reached picking size, and the date husks first split. Add the weight of dried husk you finished with.
After two or three seasons those numbers show you your own local pattern, which may run several weeks either side of any general guide. They also diagnose a bad year immediately: a female that flowered a fortnight after the male explains an empty autumn far better than any theory about soil, and a note saying so stops you from digging the plant up to find out.