Serviceberry (Amelanchier), also called juneberry, saskatoon or shadbush, is a hardy, self-fruitful shrub or small tree with spring blossoms and sweet purple-blue berries. Utah State University Extension lists it as hardy to zone 3, with sizes ranging from about 6 to 30 feet tall depending on species and cultivar, and notes plants are productive for about 20 years.
Serviceberry (Juneberry) at a glance
| Type | Fruit |
|---|---|
| Season | Perennial |
| Sun | Full sun |
| Plant spacing | 96 in |
| Row spacing | 96 in |
| Per square foot | 1 |
| Seed depth | At surface |
| Days to maturity | Heavier crops from year 3–5; full production about year 8 |
| How to start | Plant serviceberry in spring or fall in well-drained soil and full sun, net the shrub before the fruit ripens and expect real harvests from year 3 to 5 |
| Water | 1 in per week |
These are the same numbers our plant spacing, square foot and harvest date calculators use. See every crop in the plant database.
When to plant serviceberry
Plant in spring or fall (USU); Montana State says bare-root plants go in early spring. Expect little fruit in years 1 and 2, heavier yields from years 3 to 5, and full production at about year 8, with top cultivars yielding up to about 10 pounds per plant. Blooms in May and fruit ripens late June through July. Check your growing zone.
How to plant serviceberry
- Choose full sun. Partial shade lowers yields. Soil should be well drained; USU says clay can cause root rot, so use raised beds or organic mulch. Montana State gives a pH range of 5.5 to 7.0 and notes tolerance up to 8.0.
- Dig the hole about twice the container’s width at the same depth. Keep the root flare 2–4 inches above ground level and mulch 4–6 inches with shredded bark (Montana State).
- Spacing depends on the cultivar, so check the tag for mature size. USU lists ‘Regent’ at about 6 × 6 feet and ‘Thiessen’ at 15 × 12 feet. See the plant spacing calculator.
Caring for serviceberry
Water about twice a week in the first season, keeping soil moist but not wet; in later years about every two weeks, at the base to keep foliage dry (USU). In spring as buds break, apply about 4 ounces of 16-16-16 fertilizer, ideally after a soil test. See the garden watering calculator.
Pruning: in late winter or early spring before growth, remove only weak or damaged branches in years 1–3. After year 3, prune more vigorously, removing about one-third of old growth each year, because fruit forms on 2- to 4-year-old stems. Aim for an open, vase shape.
Pests and diseases: birds are the biggest threat, so drape the shrub with netting in spring before fruit ripens. Entomosporium leaf and berry spot, rusts, fire blight and powdery mildew can occur; keep junipers and eastern red cedars well away and see the pest identifier.
Companion plants
| Grow nearby | Other fruit shrubs and a mulched, weed-free root zone |
|---|---|
| Keep apart | Junipers and eastern red cedars nearby, which host rusts (Montana State suggests keeping them at least 200 yards from Rosaceae) |
Shallow cultivation only, since roots are shallow. Check other pairings with the companion plant finder.
Common problems
| Problem | What you see | What to do |
|---|---|---|
| Birds eating the fruit | Berries vanish before they ripen | Net the whole shrub in spring before ripening. |
| Leaf and berry spot | Brown angular leaf spots with yellow rings | Common in rain or with overhead watering. Prune infected wood 12 inches below the infection and sterilize pruners between cuts. |
| Powdery mildew | White dust on leaves and stems | Improve light and airflow, water at the base, prune out badly infected shoots, and choose resistant cultivars. |
Not sure what you are looking at? The plant problem identifier ranks likely causes from the symptoms you see.
When and how to harvest
Harvest late June through July when about two-thirds of the fruit is ripe. Pick by hand early in the morning when fruit is dry and cool, then refrigerate quickly; dry the fruit before refrigerating or freezing (USU). Use it fresh or for juice, jelly, jam and pie.
Plan your serviceberry
- Plant spacing calculator: how many plants fit your bed
- Planting calendar: sowing and transplant dates for your frost dates
- Frost dates by ZIP code: your last spring and first fall frost
- Harvest date calculator: when your crop will be ready
Frequently asked questions
How far apart should I plant serviceberries?
Space serviceberries 96 inches apart in rows 96 inches apart. In a square foot garden, plant 1 per square foot.
How deep do I plant serviceberry plant?
Plant at the same depth as the container, with the root flare 2–4 inches above ground level.
How long do serviceberries take to grow?
Little fruit in years 1–2, heavier yields from years 3–5, full production about year 8.
How much water do serviceberries need?
About 1 inch of water a week, from rain and watering combined. About twice a week the first season, then about every two weeks; keep soil moist but not wet.
When do serviceberries ripen?
Late June through July; harvest when about two-thirds of the fruit is ripe.
Do I need two serviceberry plants?
Most serviceberries are self-fruitful, according to USU and Montana State.
How do I stop birds eating serviceberries?
Drape the whole shrub with bird netting in spring before the fruit ripens.