How to Grow Autumnalis Cherry
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Autumnalis Cherry
Prunus subhirtella 'Autumnalis'
treeAutumnalis is a deciduous ornamental cherry tree renowned for its unique characteristic of blooming twice per year—once in autumn and again in spring. This elegant tree produces delicate, semi-double white flowers that create a stunning visual display during cooler months when few other trees are flowering. It typically reaches 20-30 feet tall and is prized in gardens for extending the blooming season beyond the typical spring cherry display.
When should you plant Autumnalis Cherry in your zone?
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Example Autumnalis Cherry timeline · Pittsburgh, PA (Zone 6b)
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Plant Autumnalis Cherry
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Autumnalis Cherry
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Autumnalis Cherry dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5b-9a; performs best in zones 6-8 with distinct seasons
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Get my Autumnalis Cherry timeline →Growth Stages
Establishment
1-2 yearsYoung tree with developing branch structure; limited flowering in first year or two
Water regularly and deeply; stake if needed for support; avoid heavy pruning; apply mulch around base
Vegetative Growth
Ongoing, primarily spring-summerTree develops strong branching framework; foliage is full and healthy green
Prune to shape in late winter; remove any crossing or diseased branches; maintain consistent watering schedule
Autumn Flowering
8-12 weeks (September-November)Semi-double white flowers appear in fall (September-November), often appearing sporadically or after cold nights
Avoid heavy pruning after August; reduce nitrogen fertilizing to encourage flowering over leaf growth; monitor for pests
Spring Flowering
3-4 weeks (March-April, depending on zone)Profuse semi-double white blossoms cover branches before leaf emergence; spectacular display
Admire the bloom; resist pruning during flowering; deadheading not necessary but light cleanup acceptable after bloom
Summer Maturity
June-AugustDense green foliage; tree in full leaf; minimal visible change
Water during dry periods; monitor for pests and diseases; can prune if needed to shape tree (though minimize)
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick in early morning; use traps away from tree; neem oil or insecticidal soap for heavy infestations
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Remove tent clusters by hand; prune affected branches; Bacillus thuringiensis (Bt) spray for severe cases
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Strong spray of water; insecticidal soap; neem oil; encourage natural predators
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Spray undersides of leaves with water; neem oil or insecticidal soap in early summer
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Dormant oil spray in late winter; insecticidal soap in growing season; prune heavily infested branches
Uses
Dual-season flowering spectacle
OrnamentalThe unique autumn and spring blooming characteristic provides two seasons of delicate white flower displays when few other ornamental trees are flowering. This makes it invaluable for gardens seeking extended seasonal interest. [source]
Early nectar source
WildlifeAutumn blooms provide essential nectar for pollinators and beneficial insects during the fall season when food sources are scarce. Spring flowers support early-season pollinator activity. [source]
Cut flower arrangements
HouseholdFlowering branches can be cut and brought indoors for elegant floral arrangements. Branches cut in tight bud stage can be forced to open indoors, bringing spring into your home. [source]
Landscape focal point
OrnamentalAs a medium-sized ornamental tree, Autumnalis serves as an excellent specimen tree or focal point in landscape designs, gardens, or parks where its unique flowering habits can be appreciated. [source]
Flower garnishing
CulinaryThe delicate semi-double flowers can be used as elegant garnishes for desserts, salads, and beverages, adding visual appeal and a subtle floral note to culinary creations. [source]
Harvest Tips
Autumnalis is an ornamental tree grown for flowers, not fruit production. Enjoy blooms photographically or by cutting branches for indoor arrangements. Cut branches in early bud stage for indoor forcing; place in warm water indoors to encourage opening.
Fun Facts
- 🌱 Autumnalis cherry is often called the 'Christmas tree of Japan' because it can bloom during the holiday season in mild climates, providing festive winter color.
- 🌱 The semi-double flowers contain multiple layers of petals (typically 15-20 petals per flower) rather than the five petals of wild cherries, creating a fuller, more ornamental appearance.
- 🌱 The autumn flowering is triggered by temperature drops and shorter day length, making the fall bloom more reliable in regions with cooler autumns; warm falls may result in sporadic or delayed autumn flowering.
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