Heirloom

Granny Smith Apple

Malus domestica 'Granny Smith'

The iconic tart green apple that's a staple in kitchens worldwide, prized for its crisp texture and bright acidic flavor that holds up beautifully in baking. This Australian heirloom produces heavy crops of large, bright green apples that store exceptionally well for months. A reliable performer that's perfect for gardeners who want a classic apple variety that excels in both fresh eating and culinary applications.

Harvest

160-180d

Days to harvest

📅

Sun

Full sun

☀️

Zones

4–9

USDA hardiness

🗺️

Height

15-30 feet

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Transplant

Harvest

Transplant

Harvest

Showing dates for Granny Smith Apple in USDA Zone 7

All Zone 7 fruit-tree →

Zone Map

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Granny Smith Apple · Zones 4–9

What grows well in Zone 7? →

Growing Details

Difficulty

Moderate

Spacing12-15 feet

SoilWell-drained loamy soil with good organic content

pH6.0-7.0

Water1-2 inches per week, deep watering

SeasonPerennial fruit tree

FlavorVery tart, crisp, and juicy with bright acidity

ColorBright green with occasional pink blush

SizeLarge, 3-4 inches diameter

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 4	—	June – July	—	September – September
Zone 5	—	May – July	—	September – October
Zone 6	—	May – July	—	August – October
Zone 7	—	May – June	—	August – October
Zone 8	—	April – June	—	July – November
Zone 9	—	March – May	—	June – December

Complete Growing Guide

Soil: Clay, Loam (Silt), Sand. Soil pH: Alkaline (>8.0), Neutral (6.0-8.0). Drainage: Good Drainage, Moist, Occasionally Dry. Height: 15 ft. 0 in. - 30 ft. 0 in.. Spread: 15 ft. 0 in. - 30 ft. 0 in.. Spacing: 24-60 feet. Growth rate: Medium. Maintenance: CrimsonCrisp®, 'Empire', 'Fuji', 'Gala', 'Ginger Gold', 'Golden Delicious', 'Jonagold', 'Mutsu', 'Red Delicious', 'Rome', 'Stayman'. Propagation: Grafting, Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

Large, round, firm fruits that often have a waxy coating. Some varieties ripen late summer and some in the fall.

Color: Gold/Yellow, Green, Red/Burgundy. Type: Pome. Length: > 3 inches. Width: > 3 inches.

Garden value: Edible

Harvest time: Fall, Summer

Bloom time: Spring

Edibility: Fruits can be eaten raw and cooked in a variety of dishes.

Storage & Preservation

Fresh Granny Smith apples store exceptionally well—up to 6 months when handled properly. For short-term storage (2-3 weeks), keep them in a cool, dry place away from direct sunlight. For extended storage, refrigerate at 32-35°F with high humidity (90-95%). Wrap individual apples in newspaper or store in perforated plastic bags to maintain moisture while preventing condensation.

Check stored apples monthly and remove any showing soft spots immediately—one bad apple truly does spoil the bunch by releasing ethylene gas.

For preservation, Granny Smiths excel at freezing when sliced and treated with lemon juice to prevent browning. They make outstanding applesauce and apple butter due to their high pectin content and tart flavor that intensifies when cooked. Dehydrating produces excellent apple chips—slice thinly and dry at 135°F for 8-12 hours. Their firm texture and acidic nature also make them perfect for traditional water bath canning in pie fillings or as spiced apple rings.

History & Origin

Origin: Central Asia to Afghanistan

Advantages

+Attracts: Pollinators, Small Mammals
+Edible: Fruits can be eaten raw and cooked in a variety of dishes.

Companion Plants

Plant Together

Chives

Repels aphids and improves apple tree health when planted nearby

Nasturtiums

Acts as trap crop for aphids and woolly aphids, protecting apple trees

Comfrey

Deep roots bring nutrients to surface and leaves make excellent mulch for apple trees

Dill

Attracts beneficial insects like lacewings and parasitic wasps that control apple pests

Marigolds

Repels nematodes and various insects while attracting beneficial predatory insects

Clover

Fixes nitrogen in soil and provides living mulch that retains moisture for apple tree roots

Yarrow

Improves soil health and attracts beneficial insects that prey on apple tree pests

Garlic

Repels aphids, borers, and other common apple tree pests when planted in the root zone

Keep Apart

Black Walnut

Produces juglone which is toxic to apple trees and can stunt growth or kill them

Grass

Competes heavily for water and nutrients, reducing apple tree vigor and fruit production

Nutrition Facts

Calories

25kcal(1%)

Protein

0.6g(1%)

Carbs

5.7g(2%)

Fat

0.3g(0%)

Vitamin C

22.3mg(25%)

Vitamin A

17mcg(2%)

Iron

0.07mg(0%)

Calcium

29mg(2%)

Potassium

123mg(3%)

Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #168171)

Pests & Disease Resistance

Resistance

Susceptible to apple scab, fire blight, and powdery mildew

Common Pests

Codling moth, apple maggot, aphids, scale insects

Diseases

Apple scab, fire blight, powdery mildew, cedar apple rust

Frequently Asked Questions

How long does it take for a Granny Smith apple tree to produce fruit?▼

Granny Smith apple trees typically begin producing small crops in their 3rd or 4th year after planting, with full production starting around year 5-7. Dwarf rootstocks may fruit 1-2 years earlier than standard trees. The exact timeline depends on rootstock, growing conditions, and proper pruning practices during establishment.

What apple varieties pollinate Granny Smith trees?▼

Granny Smith requires cross-pollination from mid-season blooming varieties like Red Delicious, Golden Delicious, Fuji, Gala, or Jonathan. Plant pollinator trees within 100 feet for best results. Crabapples like Dolgo or Evereste also work excellently. Avoid early bloomers like Gravenstein or very late bloomers like Mutsu.

Can you grow Granny Smith apples in containers?▼

Yes, but choose dwarf rootstock varieties in containers at least 20-24 inches wide and deep. Use well-draining potting mix and ensure consistent watering since containers dry out faster. You'll still need a pollinator variety nearby. Expect smaller yields than ground-planted trees, typically 10-15 apples per container tree when mature.

When should I plant Granny Smith apple trees?▼

Plant bare-root Granny Smith trees in early spring, 4-6 weeks before the last expected frost when soil is workable but not waterlogged. Container trees can be planted spring through early fall, but spring planting allows better root establishment before winter. Avoid planting during active growth periods or when temperatures exceed 85°F.

Why are my Granny Smith apples not very tart?▼

Granny Smith apples lose tartness when grown in very hot climates, harvested too early, or stored improperly. Cool nights during fruit development are crucial for acid development. Trees grown in zones 8-9 may produce less acidic fruits than those in cooler zones 5-7. Proper harvest timing also ensures maximum acid content.

How do I prevent apple scab on Granny Smith trees?▼

Prevent apple scab through good sanitation, proper spacing for air circulation, and preventive fungicide sprays. Remove fallen leaves in autumn, prune for open canopy structure, and apply dormant copper sprays. During growing season, use organic fungicides like sulfur or synthetic options during wet periods when scab spores are active.