PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Mayhaw, Riverflat Hawthorn
Crataegus opaca

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Crataegus (krah-TEE-gus) (Info)
Species: opaca (oh-PAK-uh) (Info)

Category:

Shrubs

Height:

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

Spacing:

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)

Hardiness:

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

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Sun to Partial Shade

Danger:

Seed is poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Foliage:

Grown for foliage

Deciduous

Good Fall Color

Other details:

Average Water Needs; Water regularly; do not overwater

This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:

4.6 to 5.0 (highly acidic)

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Remove fleshy coating on seeds before storing

Allow unblemished fruit to ripen; clean and dry seeds

Properly cleaned, seed can be successfully stored

Regional

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

Atmore, Alabama

Hughes, Arkansas

Hampton, Florida

Baton Rouge, Louisiana

Plain Dealing, Louisiana

Florence, Mississippi

Spring, Texas

show all

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Aug 30, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

In the southeast U.S., mayhaws are valued for their fruit, which is used to make jelly.