nut tree
Heartnut Japanese walnut
Needs space, sun, and patience; use as a long-term nut tree.
Growing Profile
- Hardiness
- Zones 4b-8b
- Sun
- Full
- Soil
- Loam
- Water
- Medium
- Deer pressure
- Not rated No deer-resistance category is assigned yet; treat browsing risk as local and variable.
- Black walnut
- Mixed or uncertain Use as a black walnut / juglone planning cue; tolerance varies by cultivar, soil, and distance from the tree.
- Planting depth
- Keep the root flare at soil level; graft unions stay above grade.
- Container min
- 45+ gal (in-ground preferred)
- Goals
- FruitCurb appeal & color
Harvest & Use
- Window
- heart-shaped nuts in fall
- Yield return
- 20-100 lb/plant/year
- First output
- 4-8 yrs
- Best for
- FruitCurb appeal & color
Harvest window: heart-shaped nuts in fall. Once established, the current pound-return model uses 20-100 lb/plant/year with a harvest window of 2-5 weeks.
Plant photos
What it looks like in the garden
Use these photos to compare the plant's leaves, stems, flowers, fruit, and overall habit before you buy or plant.
Photos show a representative plant in the garden. Cultivar appearance, fruit color, bloom timing, and growth habit can vary by site and season.
Photo sources: Bountiful Ridge Nurseries.; Henry G. Gilbert Nursery and Seed Trade Catalog Collection. (CC BY 2.0)
Quantitative Profile
- Pound return
- 20-100 lb/plant/year
- 10-year return
- 49.7-248.3 lb/10 yrs
- Full output
- 10-15 yrs
- Mature size
- 40-80 ft H x 30-70 ft W
- Spacing
- 35-50 ft in-row x 25-40 ft rows
- Planting depth
- Keep the root flare at soil level; graft unions stay above grade.
- Container min
- 45+ gal (in-ground preferred)
- Productive life
- 25-75 yrs
- Difficulty
- 4/5
- Reliability
- 3/5
- Data quality
- Low profile, Low yield confidence
Pound return is the stock-style yield metric. These are planning ranges for comparing plants, not guarantees. Cultivar, rootstock, climate, soil, pruning, pest pressure, and wildlife can move actual results.
Planting Checklist
8 itemsPlant by ZIP may earn a commission from qualifying purchases through checklist links.
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Tree trunk guard
Protection / After plantingProtect young trunks from mower damage, sunscald, rabbits, and rubbing injury.
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Fruit tree and berry fertilizer
Nutrition / After establishmentSupport fruiting wood, bloom, and recovery after establishment once soil needs are known.
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Soil test kit or lab mailer
Site prep / Before plantingCheck pH and baseline nutrients before adding amendments, especially for fruiting crops, native beds, and acid-loving plants.
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Digging spade or shovel
Tools / Planting dayOpen planting holes, loosen compacted soil, and shape beds for larger transplants.
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Plant labels
Planning / Planting dayTrack cultivar, planting date, and variety when comparing harvests or pollination partners.
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Tree stake kit
Support / Planting dayStabilize newly planted trees only where wind, slope, or root-ball movement makes support necessary.
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Organic mulch
Soil / After plantingHold soil moisture, suppress weeds, moderate soil temperature, and protect shallow roots.
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Drip irrigation kit
Watering / Install at plantingDeliver steady root-zone moisture with less leaf wetness and less water loss.
Yield curve
Estimated Pound Return
Projected annual yield ramp from establishment to full production, using the current sourced range for Heartnut Japanese walnut.
- Year 1
- 0 lb Establishment year: focus on roots before harvest.
- Year 5
- 4-20 lb
- Year 10
- 11.7-58.3 lb
- 10-year total
- 49.7-248.3 lb/10 yrs
Shaded band shows the sourced low-to-high pound-yield range. The line tracks the midpoint for quick comparison.
Method: direct pound yield from crop metric source. Annual crops assume one comparable planting per year; perennial crops ramp from first bearing to full production.
Planting Strategy
- Planting depth: Keep the root flare at soil level; graft unions stay above grade.
- Container minimum: 45+ gal (in-ground preferred). Large trees can be started in containers but are not practical long-term patio crops.
- Start with one plant when testing fit in a new bed or container.
- Plant more than one when harvest volume or pollination is the main goal.
Risk Factors
- Match the site first: full light, loam soil, and medium water.
- Use 35-50 ft in-row x 25-40 ft rows as the first spacing model; adjust for hedges, trellises, containers, or local guidance.
- Plan around mature size: 40-80 ft H x 30-70 ft W.
- For harvest planning, treat "heart-shaped nuts in fall" and 20-100 lb/plant/year as planning ranges, not guarantees.
- Quantitative data quality is low for this record; verify before buying or planting at scale.
Related Planning Guides
Comparable Plants
Sources & Methodology
This guide combines hardiness range, light, soil, water, harvest timing, traits, supplier links, plant relationships, and quantitative planning metrics. Pairings are screened for practical garden fit.
Quantitative values use extension and botanical-reference ranges where available. For less-studied cultivars, similar crops fill gaps conservatively. Ranges are intentionally broad so the profile stays useful without pretending to be exact.
Planning sources: NC State Extension Gardener Plant ToolboxMissouri Botanical Garden Plant FinderUniversity of Maryland Extension - Planting a Tree or ShrubUniversity of Maryland Extension - Starting a Home Fruit GardenUniversity of Maryland Extension - Types of Containers for Growing Vegetables
Supplier search: Raintree Nursery. Search links are not paid placements unless explicitly marked; affiliate listings may earn a commission. Last reviewed: 2026-05-31.