Wild Plum American (Red) Plum August Plum
Prunus americana
Rosaceae · broadleaf deciduous shrub · introduced
Last updated
Plant Profile
Size & Form
Height
24 ft
Spread
15-25 ft
Growth Rate
Moderate
Size at 20 yr
24 ft
Lifespan
Long-lived
Site Requirements
Light
Full Sun
Soil Drainage
Wet Tolerant
Soil pH
5.0-7.0
Water
Moderate
Drought Tolerance
Moderate to high
Hardiness
Zones 3a–8b
Ornamental Interest
Bloom Time
March
Fall Color
Yellow, red
Origin
from Massachusetts to southern Ontario and Manitoba
Watch for this season
Coryneum blight (Shothole)High
Primary Infection - Flowers and Young Leaves
Cytospora CankerHigh
Peak Spore Production and Dispersal
Powdery MildewHigh
Active Conidial Spread
RustHigh
Uredinial Stage (Summer)
+ 17 more — see full disease and pest lists below
Diseases: Regionally Documented (51)
Witches'-broom (Cherry leaf curl) Verticillium dahliae Verticillium Wilt Wilsonomyces carpophilus Coryneum blight (Shothole) Prunus necrotic ringspot virus (PNRSV) Prunus Necrotic Ringspot Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Necrotic rusty mottle virus (uncharacterized) Necrotic rusty mottle Mottle leaf Little cherry virus-1 and Little cherry virus-2 Little Cherry Symptom category — not a single disease Leaf Spot Pseudomonas syringae pv. syringae (bacterial canker complex) Dead Bud Cytospora spp. (Valsa spp., Leucostoma spp.) Cytospora Canker Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall Monilinia fructicola and M Brown Rot Blossom Blight and Fruit Rot Apiosporina morbosa Black Knot Pseudomonas syringae pv. syringae Bacterial Canker Armillaria spp. — primarily A Armillaria Root Rot Plum pox virus (PPV) Plum Pox (Sharka) Xanthomonas arboricola pv. pruni Red Spot Fruit Blemish (Freckles) Chondrostereum purpureum Silver Leaf Multiple Basidiomycete fungi cause wood decay in trees Wood Decay An uncharacterized Black Canker Cherry twisted leaf-associated virus Cherry Twisted Leaf Believed to Crinkle Leaf and Deep Suture Eola rasp Eola Rasp Leaf (Yellow Bud Mosaic) Although bacterial Fungal Cankers June Drop Grapevine leafroll virus Leafroll Uncharacterized graft Necrotic Rusty Mottle (Lambert Mottle) and Rusty Mottle Phytophthora spp. (P Phytophthora Root Rot Multiple fungal agents Pitting Many fungi Postharvest Rots Prune dwarf Prune Dwarf Cherry rasp Rasp Leaf Pythium spp., Phytophthora spp., Rhizoctonia spp., Fusari... Replant Disease This problem Rosette [VERIFY] (multiple possible causes) Rugose Several causes Stem Pitting Cherry leafroll virus (CLRV); complex with prune dwarf vi... Virus-induced Cherry Decline Raspberry bushy dwarf virus and related viruses Virus Candidatus Phytoplasma pruni X-Disease Taphrina deformans Leaf Curl Russeting Chrysomyxa piperiana Rusty Spot Split Pit Sprinkler Rot (Phytophthora Fruit Rot) Taphrina pruni Plum Pockets Multiple genera (Melampsoridium, Thekopsora, Naohidemyces... Rust Xiphinema americanum and related species Nematode, Dagger Mesocriconema spp Nematode, Ring Pratylenchus penetrans (primary) and P Nematode, Root-lesion Various plant-parasitic nematode genera Nematodes
Pests: Regionally Documented (31)
Drosophila suzukii Spotted-wing drosophila Tetranychidae Spider mite Scolytus rugulosus Shothole borer Diaspidiotus perniciosus San Jose scale Pear slug (Cherry slug) Synanthedon exitiosa Peachtree borer Tortricidae Leafroller Forficula auricularia Earwig Noctuidae Cutworms and Armyworms Cherry fruit fly Enarmonia formosana Cherry bark tortrix Myzus cerasi Black cherry aphid Choreutis pariana Apple-and-thorn skeletonizer Halyomorpha halys Brown marmorated stink bug Hyphantria cunea Fall webworm Anarsia lineatella Peach twig borer Aphidoidea Aphid Choristoneura rosaceana Obliquebanded Leafroller Otiorhynchus spp. Root weevil Edwardsiana rosae Rose leafhopper Malacosoma spp. Tent caterpillar Western red-humped caterpillar Cacoecimorpha pronubana Carnation tortrix Aculus cornutus Peach silver mite Parthenolecanium spp. Lecanium scale Phorodon humuli Hop aphid Brachycaudus helichrysi Leaf curl plum aphid Coccoidea Scale insect Chrysobothris mali Pacific flatheaded borer Archips argyrospila Fruittree leafroller Cicadellidae Leafhopper
Phenological Calendar
View full calendar (8 stages)
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Bloom start BBCH 61 | Mar 1-Mar 31 |
| Bloom end / petal fall BBCH 69 | Mar 15-Apr 15 |
| Leaf emergence BBCH 11 | Apr 1-Apr 30 |
| Fruit/seed development BBCH 71 | Jun 1-Aug 31 |
| Fruit/seed maturity BBCH 85 | Sep 1-Nov 30 |
| Leaf drop BBCH 93 | Oct 15-Nov 30 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |
Data Maturity Structured Multiple sources. Expert review underway.