Oval-leaf Blueberry

Vaccinium ovalifolium

Ericaceae · deciduous shrub · native

Oval-leaf blueberry is a deciduous shrub native to the Pacific Northwest, particularly in montane and subalpine forests. The plant bears simple, alternate, oval to elliptic leaves (2-5 cm) that are glossy and bright green. In spring, purple or lavender flowers appear, followed by blue berries in summer.

Oval-leaf blueberry prefers partial shade on moist, well-drained, acidic soils high in organic matter. Provide consistent moisture during the growing season and shelter from harsh sun. The plant is long-lived and relatively pest-free. The edible berries are sweet and are valued by wildlife, birds, and humans.

Quick Facts

Height

8 ft

Growth Rate

Moderate

Light

Sun to Part Shade

Soil

Adaptable

Water

Moderate

Hardiness

Zone Zones 3b–8b

Bloom Time

Apr 1-Apr 30

Origin

Pacific Northwest native

Phenological Calendar

Stage	Typical Window	What to Look For
Bud break BBCH 07	Feb 15-Mar 15	Buds swelling and beginning to open; first green tissue visible
Leaf emergence BBCH 11	Mar 1-Apr 1	First leaves fully unfurled on new growth
Bloom start BBCH 61	Apr 1-Apr 30	First open flowers visible; flowers purple
Bloom end / petal fall BBCH 69	Apr 15-May 15	Last petals falling; flower structures fading
Fruit/seed development BBCH 71	Jun 1-Aug 31	Fruit or seed structures forming; fruit color: blue
Leaf drop BBCH 93	Oct 15-Nov 30	Leaves yellowing and dropping; no significant fall color display
Dormancy BBCH 97	Nov 15-Feb 28	Leafless; no active growth; dormant buds set