Crataegus opaca Hook. & Arn.
Mayhaw, Riverflat hawthorn, Western mayhaw
Rosaceae (Rose Family)
Synonym(s): Crataegus nudiflora
USDA Symbol: crop
Small tree with relatively tall trunk and narrow, rounded crown; or a large shrub. River-flat hawthorn or may haw is a small tree or shrub, to 30 ft., with spiny branches and oval to oblong, dark-green leaves. Clusters of showy pink or white flowers appear before and with the leaves. Large, green to reddish fruit ripens from May to June.
The large, edible fruit is made into preserves and jellies.
From the Image Gallery
Bloom InformationBloom Color: White
Bloom Time: Feb , Mar
DistributionUSA: AL , AR , LA , MS , TX
Native Distribution: AL to e. TX, n. to s. AR
Native Habitat: Low, wet woods; creek and river bottoms
Growing ConditionsLight Requirement: Part Shade
Soil Moisture: Wet
Soil Description: Wet, rich soils.
Conditions Comments: Used as an ornamental or hedge in poorly drained, shady places. Fruit makes a delicious preserve.
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationDescription: Stratified seed will germinate.
Seed Collection: Fruits may be hand-picked or shaken from the plant. Clean seeds from the pulp to avoid mold and fermentation. Air-dry before storing. Store in sealed, refrigerated containers.
Seed Treatment: 6-8 weeks of moist chilling improves germination.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Crosby Arboretum - Picayune, MS
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
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Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.View Recommended Species page
Additional resourcesUSDA: Find Crataegus opaca in USDA Plants
FNA: Find Crataegus opaca in the Flora of North America (if available)
Google: Search Google for Crataegus opaca
MetadataRecord Modified: 2013-09-07
Research By: TWC Staff