Southern Hawthorn

Shrub

Southern Hawthorn

Crataegus flava

Also known as: Summer Hawthorn, Yellow Hawthorn

ShrubTree Rosaceae Wildlife AttractorEdibleBorder PlantErosion Control
Hardiness Zone
6-9
Ideal Temp
40–95°F
Survives Down To
-10°F
Life Cycle
Perennial

Southern hawthorn (Crataegus flava) is a small native tree of southeastern North American wood margins, bearing showy white spring flowers and yellow to orange pomes ripening in summer—earlier than many hawthorns. Plants reach 15–25 feet (4.5–7.5 m), often thorny and wide-crowned. Fruit supports jellies for patient cooks; birds arrive for the leftovers. ☀️💧 Sun and Water Requirements: Full sun to partial shade; best fruiting with strong light. Moist, well-drained loams suit it; tolerates clay if drainage moves. Mulch to reduce competition; water during establishment droughts. ✂️ Propagation: Sow stratified seed; graft known selections if you find superior fruit. Prune for open vase shape to reduce leaf diseases. 🌾 Harvest / Best Use Timing: Pick fruit when color shifts fully and flesh yields slightly—process into jelly quickly. Bloom peaks in spring after frost risk falls near 32°F (0°C) for local climate.

Good Neighbors
  • Wild Plum — thicket neighbor extending successional fruit
  • Serviceberry — earlier soft fruit at the guild margin
  • Beautyberry — late-season color contrast beneath hawthorn canopy edges
Cautions
  • Fire Blight — prune strikes during dry weather
  • Hawthorn ID arguments—carry a regional key before internet debates
Known Threats — Organic Solutions Only
Aphids
Aphidoidea
Apple Maggot
Rhagoletis pomonella
Apple Scab
Venturia inaequalis
Bagworm
Thyridopteryx ephemeraeformis
Blackberry Psyllid
Cacopsylla curvata
Brown Marmorated Stink Bug
Halyomorpha halys
Brown Rot
Monilinia fructicola
Cherry Fruit Fly
Rhagoletis cingulata
Codling Moth
Cydia pomonella
Cyclamen Mite
Steneotarsonemus pallidus
Eastern Tent Caterpillar
Malacosoma americanum
Fall Webworm
Hyphantria cunea
Fire Blight
Erwinia amylovora
Gall Mite
Eriophyidae
Harlequin Ladybird
Harmonia axyridis
Japanese Beetles
Popillia japonica
Leaf Blight
Various Fungal Pathogens
Leaf Spot
Multiple species (e.g., Cercospora, Septoria, Alternaria)
Lesser Peachtree Borer
Synanthedon pictipes
Oriental Fruit Fly
Bactrocera dorsalis
Oriental Fruit Moth
Grapholita molesta
Peach Twig Borer
Anarsia lineatella
Peachtree Borer
Synanthedon exitiosa
Pear Psylla
Cacopsylla pyricola
Plum Curculio
Conotrachelus nenuphar
Raspberry Beetle
Glischrochilus sanguinolentus
Raspberry Cane Borer
Oberea perspicillata
Rose Slug
Endelomyia aethiops
Rust Mite
Eriophyidae
Sparganothis Fruitworm
Sparganothis sulfureana
Spittlebugs
Cercopidae
Spotted Lanternfly
Lycorma delicatula
Stink Bug
Pentatomidae
Strawberry Root Weevil
Otiorhynchus ovatus
Tent Caterpillar
Malacosoma spp.
Twig Girdlers
Oncideres spp.
Vine Weevil
Otiorhynchus sulcatus