When does thimbleberry bloom?

Thimbleberry produces its white flowers from May through July, with timing varying by elevation and local climate.

What pollinates thimbleberry flowers?

Bees and beetles are the main visitors to thimbleberry flowers, drawn to the open white blooms.

How much sun does thimbleberry need?

Thimbleberry does best in part sun but tolerates a range from full sun to part shade, especially where soil stays moist.

How much water does thimbleberry require?

This shrub prefers medium to high moisture and struggles in dry, drought-prone sites without supplemental water.

Is thimbleberry deciduous or evergreen?

Thimbleberry is deciduous, dropping its broad, soft leaves each fall and regrowing them in spring.

Is Thimbleberry toxic to livestock?

The USDA PLANTS Database does not flag Thimbleberry as toxic to livestock.

Is Thimbleberry HOA-friendly?

Thimbleberry takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Thimbleberry

Name: Pollinator Patch
Author: Pollinator Patch

Rubus parviflorus

Last reviewed: August 2026

Thimbleberry is a deciduous shrub with large maple-like leaves and white flowers that bloom from May through July. It grows well in part sun with medium to consistently moist soil, often along forest edges and mountain slopes.

Toxicity unknown

Thimbleberry (Rubus parviflorus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Thimbleberry as toxic to livestock.

Light

part sun

Water

medium

Size

36"–72" H × 36"–72" W

Bloom

May, Jun, Jul

Native to

AZ, CA, CO, IA and 13 more states

Pollinators

bees, beetles

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Northwestern Forested Mountains

Thimbleberry is a native shrub that forms dense colonies through underground runners. It produces white flowers in late spring through summer, followed by red raspberry-like berries that are edible but seedy. The large, soft leaves turn yellow in fall before dropping.

Growing Thimbleberry

Grow Thimbleberry in part sun and medium water. Mature plants reach 36 to 72 inches tall and spread 36 to 72 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Thimbleberry takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Spreads aggressively and can look unkempt
Large informal growth habit appears too wild for front yards
May be perceived as weedy bramble by neighbors

Wildlife value

The flowers attract native bees and beetles during the long blooming period. Birds and small mammals eat the berries, while the dense growth provides nesting habitat.

Common questions

When does thimbleberry bloom?: Thimbleberry produces its white flowers from May through July, with timing varying by elevation and local climate.
What pollinates thimbleberry flowers?: Bees and beetles are the main visitors to thimbleberry flowers, drawn to the open white blooms.
How much sun does thimbleberry need?: Thimbleberry does best in part sun but tolerates a range from full sun to part shade, especially where soil stays moist.
How much water does thimbleberry require?: This shrub prefers medium to high moisture and struggles in dry, drought-prone sites without supplemental water.
Is thimbleberry deciduous or evergreen?: Thimbleberry is deciduous, dropping its broad, soft leaves each fall and regrowing them in spring.
Is Thimbleberry toxic to livestock?: The USDA PLANTS Database does not flag Thimbleberry as toxic to livestock.
Is Thimbleberry HOA-friendly?: Thimbleberry takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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