How to grow orange
Family Rutaceae. Hardy to USDA hardiness zone 9a+ (U.S. Department of Agriculture). Full sun. Ready in 3-4 years to bearing (perennial tree).
Sun
Full sun
Spacing
12-25 ft
Days to harvest
3-4 years to bearing (perennial tree)
Hardiness
Zone 9a+
What growers actually recorded
Loading zone 7b results…
When to plant orange
- Transplant out: ~2 weeks after last frost.
Companion plants for orange
Plant with: Marigold, Basil.
Common pests & problems
Citrus leafminer, scale, citrus psyllid.
Grower's tip
Fruit holds well on the tree once ripe, unlike most fruit; there's no rush to pick the moment color turns, letting you stagger harvest.
When to plant orange in your zone
Free month-by-month sowing and transplanting lists, built from frost dates for your USDA (United States Department of Agriculture) hardiness zone.
Soil & water for orange
Soil & pH
6.0-7.0: near neutral
Loose, well-drained loam with 3-5% organic matter.
Compost 2 in worked into the top 6 in of soil each spring.
Watering
1 in / week
Deep drip at the base twice a week beats a daily shallow sprinkle.
Consistent moisture prevents most crop problems.
Knowing when to harvest
- Full orange color and a slight softening; unlike some fruit, color change in citrus can occur before full ripeness in warm climates, so taste-testing matters.
- Sweetness continues to build even after color is full in warm regions; a taste test is the most reliable check.
- Clip rather than pull to avoid stem-end tearing.
Storing & keeping
Counter for about a week, fridge crisper for 3-4 weeks or longer. Juice freezes well for months.
What to expect
Per plant: 100-200+ oranges from a mature tree, bearing by year 3-5, sooner for grafted trees
Not cold-hardy below roughly 28-32°F depending on variety; grown outdoors year-round mainly in zones 9-11, otherwise a container-and-shelter crop.
Troubleshooting orange
Fruit stays green or pale even when sweet and ripe
Likely cause: Orange rind color depends partly on cool nights; in consistently warm climates fruit can be ripe while still green-tinged
What to do: Rely on taste rather than color alone to judge ripeness in warm regions.
Leaf drop and dieback after a cold night
Likely cause: Frost damage, since citrus foliage is sensitive even where the wood survives
What to do: Cover or move container trees ahead of forecast frost; prune out dead wood once new growth resumes.
Varieties worth growing
Washington Navel
Seedless, reliable, the standard eating orange.
Valencia
Excellent juicing variety, later-ripening, extends the harvest season.
Growing orange in containers
Viable and common in a 15-20 gallon pot; the standard route to growing orange outside zones 9-11, with winter shelter required.
Nutrition
A meaningful source of vitamins, minerals, and fiber when eaten fresh.
Common questions
Why is my orange green even though it tastes sweet?
In warm climates without cool nights, rind color can lag behind ripeness; taste is the better indicator than color.
Does orange need a pollinizer?
No, most orange varieties are self-fertile.
Where these numbers come from
- USDA Plant Hardiness Zone Map (2023 revision). Zone assignment and the 30-year normals behind every cold-hardiness figure.
- NOAA NCEI 1991-2020 Climate Normals. Frost dates, growing-season length, and the probability bands on both.
- Cornell, UMN, and UC Davis Cooperative Extension crop guides. Spacing, days to maturity, soil pH targets, and per-plant yield ranges.
- USDA FSIS / FDA Produce Safety guidance. Wash, cure, and cold-storage handling numbers.
Ranges are regional guidance, not a promise for your yard. Your own logged results always override the published range.