Grow firethorn in full sun and soil that drains. Firethorn is Pyracantha — a thorny evergreen shrub grown for orange, red, or yellow berries that feed birds through winter.
Give it full sun and soil that does not sit wet
| Factor | Recommended | Avoid |
|---|---|---|
| Sun | Full sun for the heaviest berry set; it takes part shade, with a thinner crop | Deep shade that cuts flowers and fruit, and raises disease |
| Soil | Well-drained ground — clay, loam, or sand if water does not stand | A low wet pocket or a bowl that holds rain |
| Drought | Water until roots take, then soak only in long dry spells | Overhead spray that keeps leaves wet through summer |
| Disease | A scab- and fire blight-resistant cultivar at purchase | Scab-prone kinds such as Gnome and Lowboy where summers stay humid |
| Thorns | Thick gloves and eye protection every time you work the stems | Planting over a walk, door, or play area |
Firethorn rots where water stands, and it berries poorly in shade. [1] Scarlet Firethorn and Kasan share that same sun and drain.
Scab spots leaves and berries, then drops the crop early. Fire blight blackens shoot tips. Buy a resistant cultivar before you plant — that is easier than a spray program. [2] Shade also makes scab and fire blight more likely. [3] For prune timing, see Pruning Firethorn.
How much sun does firethorn need?
Full sun for the heaviest berry crop. It grows in part shade, but expect fewer berries and more disease.
What is the best firethorn for disease resistance?
Buy a cultivar tagged for scab and fire blight resistance. Gnome and Lowboy are scab-prone in humid summers.
Plant 20 inches from the wall, or in open ground
Plant in spring while you can water. Wear gloves. Once it is in, leave it — firethorn resents being moved. [4]
- Dig a hole twice as wide as the root ball and no deeper. Burying the crown invites rot.
- For a wall, set the ball about 20 inches out from the base so the roots are not in the rain shadow. Lean the stems toward the wires and tie them on.
- For open ground, set the root flare at grade. Hedge plants about 20 inches apart; specimens 5 to 10 feet.
- Water to settle. Mulch about 2 inches over the root zone, kept off the stem.
How far from a wall should I plant firethorn?
About 20 inches. Soil right at the wall stays dry under the overhang.
How far apart should you plant a firethorn hedge?
About 20 inches in a single row. Give a freestanding shrub 5 to 10 feet.
Water it through the first season, then only in dry spells
A new plant needs water so roots leave the nursery ball. An established shrub takes missed rain better than a soggy crown, and a wall plant may still need a soak in a dry spell until the berries color.
- Water thoroughly after planting.
- Through the first growing season, check a few inches down. Water again when that soil is drying.
- Water the soil, not the foliage. Wet leaves through summer help scab and fire blight spread.
- After the second season, water only in long dry spells. A wall-trained plant may need a soak about every 10 days in heat.
How often do I water firethorn?
Keep a new plant moist the first season. After that, soak in dry spells. A wall plant in heat may need water about every 10 days until berries color.
Not cotoneaster, not hawthorn, and not barberry
Cotoneaster is the usual mix-up: both carry red or orange berries on arching stems, but cotoneaster has no thorns. Older books listed scarlet firethorn as Cotoneaster pyracantha — it is still firethorn. See How to Grow Cotoneaster. Hawthorn is Crataegus, a deciduous tree or large shrub with haws, not an evergreen berry screen. See How to Grow Hawthorn. Barberry is Berberis — also thorny, with a different leaf and a smaller shrub. See How to Grow Barberry.
Is cotoneaster the same as firethorn?
No. Cotoneaster has no thorns. Firethorn has long, sharp thorns along the stems. Both carry red or orange berries in fall.
Are firethorn berries poisonous?
A few berries are not considered poisonous. Swallowing a large handful can upset the stomach. Leave the crop for birds; do not eat them as a snack.
If berries drop early, look for scab spots on leaves. Next time, buy a resistant cultivar.
FAQ
Can firethorn grow in a pot?
A dwarf plant can spend a season in a large draining container, but it outgrows pots. Open ground or a wall is the usual home.
Does firethorn need feeding?
A spring mulch is enough for most plants. Skip heavy nitrogen — soft new shoots are more open to fire blight.
Is firethorn good for wildlife?
Yes. Dense thorny growth gives birds a nest site. Spring flowers feed bees. Berries feed birds from fall into winter.
Related guides
Recommended plants
References
- [1] Royal Horticultural Society -
https://www.rhs.org.uk/plants/pyracantha/growing-guide - [2] Clemson Extension (HGIC) -
https://hgic.clemson.edu/factsheet/pyracantha-firethorn-care-guide-growing-pruning-and-landscape-uses/ - [3] University of Arkansas Division of Agriculture -
https://www.uaex.uada.edu/yard-garden/resource-library/plant-database/shrubs/pyracantha-firethorn.aspx - [4] NC State Extension Gardener -
https://plants.ces.ncsu.edu/plants/pyracantha-coccinea/
This note is part of Pyracantha Guides.
More first-season notes by plant are gathered in How to Grow Guides.
Updated: Reviewed by Bosquelle Editors