Pieris
An ornamental plant, planted September to November, or sown March to May.
In September: mulch the pieris. It can be planted now.
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Pieris, month by month
Bar: the usual months. Sprout: this month.
| Sowing, planting or job | Sep | Oct | Nov | Dec | 2027Jan | Feb | Mar | Apr | May | Jun | Jul | Aug |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow under cover. | none | none | none | none | none | none | usual | usual | usual | none | none | none |
| Plant a pot-grown pieris. | usual | usual | usual | none | none | none | none | none | none | none | none | none |
| Feed the pieris. | none | none | none | none | none | none | usual | usual | usual | none | none | none |
| Deadhead the pieris. | none | none | none | none | none | none | none | none | usual | none | none | none |
| Mulch the pieris. | usual | usual | usual | none | none | none | none | none | none | none | none | none |
What to do, and when
The usual months for a UK garden. Your own plan gives the week.
Sowing and planting
Sow under cover March to May, on the surface. Moderate sources: Gardeners’ World and RP Seeds.
Plant a pot-grown pieris September to November. Weaker source: Plantura (outside the UK).
Feed the pieris
Use an ericaceous fertiliser, and mulch with well-rotted pine needles.
Usually March to May. Moderate source: Farmyard Nurseries.
Deadhead the pieris
Usually May. Moderate source: Gardeners’ World.
Mulch the pieris
Use well-rotted pine needles, leafmould or bark chippings to keep the soil acidic. From Gardeners’ World.
Usually September to November. Strong source: RHS.
What the source words mean
Strong: the RHS page for this plant is among them.Moderate: another trusted UK source, or the RHS on its group.Weaker: a blog, a forum, a small website or a page from outside the UK. Treat it as a guide.Outside the UK: its months may differ in a UK garden.
What not to do
Don’t prune in summer or autumn
Pruning then cuts off next spring’s flowers.
Moderate source: Farmyard Nurseries.
Every line above names the page it comes from. Where we found no good source for a job, we left it out. Where the name “Pieris” comes from.