Large Leaf Avens
Geum macrophyllum

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Geum (JEE-um) (Info)
Species: macrophyllum (mak-roh-FIL-um) (Info)

Category:

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

18-24 in. (45-60 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Late Spring/Early Summer

Foliage:

Evergreen

Velvet/Fuzzy-Textured

Other details:

May be a noxious weed or invasive

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Non-patented

Propagation Methods:

From seed; direct sow after last frost

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Bag seedheads to capture ripening seed

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Paradise, California

Melbourne, Kentucky

Portland, Oregon

Salem, Oregon

Walterville, Oregon

Bellevue, Washington

show all

Gardeners' Notes:

1
positive
0
neutrals
1
negative
RatingContent
Positive

On May 12, 2011, gardennut10 from Bellevue, WA wrote:

This is a native here in Washington state. It is beautiful in wooded natural settings. It spreads, but is not too rampant in well-shaded areas. I don't use it in my garden because it is too leggy for my taste.

Negative

On Sep 10, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:

This an upright plant that can grow to over two feet high if conditions are right. It has pinnately divided sawtoothed leaves of a light celery green. The stems and leaves have a hairy rough texture.

Large Leaf Avens is a true weed in our area of South Central coastal Alaska. It is a charming plant in the spring, as its unusual leaf pattern begins to develop. Later, the small yellow flower is rather nice, as well.

However, when the seed pods develop, as with other geum, they resemble a bur. Brushing past one can leave the seed pods all over the legs of your jeans or all over the shaggy coats of our pets. They multiply rapidly, even choking out the grass in lawns. This plant is best appreciated in the wild.