Citrus (lemon, lime, orange) care guide: when & how to prune, fertilize and spray
Citrus spp. · USDA zones 9–11
Evergreen fruit trees for frost-free or near-frost-free climates, or containers moved indoors for winter. They're heavy feeders that need micronutrients and minimal pruning.
☀️ Sun
Full sun, 8+ hours; bright window or grow light indoors.
💧 Water
Water deeply when the top 2 in (5 cm) is dry. Keep evenly moist, never soggy.
🪱 Soil
pH 6.0–7.0. Very fast-draining; sandy loam or citrus potting mix. Containers: cactus and citrus mix. Avoid heavy garden soil.
How and when to prune citrus (lemon, lime, orange)
Light prune after harvest
When: from the last spring frost to 4 weeks after.
- zones 8–10: about Feb 25 – Mar 25
Citrus need little pruning. Cleaning out dead wood and suckers keeps them productive.
- Remove any shoots growing from below the graft union. They're thorny rootstock suckers.
- Cut out dead twigs, crossing branches and overly vigorous water sprouts.
- Lightly shape for size. Avoid removing more than 20%.
Fertilizing citrus (lemon, lime, orange)
Citrus feeding: late winter
When: 1–4 weeks before the last spring frost.
- zones 8–10: about Jan 28 – Feb 18
Citrus are hungry, especially for nitrogen and micronutrients, and need feeding 3 times a year (or monthly in containers).
- Apply citrus fertilizer evenly from the trunk out to beyond the drip line and water it in.
- Containers: use liquid or slow-release citrus food monthly from spring to fall.
What to use: 🌿 Organic citrus food (e.g. Espoma Citrus-tone 5-2-6) · Citrus & avocado fertilizer with micronutrients (e.g. Jobe's or Vigoro)
Citrus feeding: early & late summer
When: 8–10 weeks after the last spring frost, then every 8 weeks (2 times a season).
- zones 8–10: about Apr 22 – May 6
Keeps fruit sizing up and the leaves deep green.
- Repeat the citrus feeding and water it in well.
What to use: 🌿 Organic citrus food (e.g. Espoma Citrus-tone 5-2-6) · Citrus & avocado fertilizer with micronutrients (e.g. Jobe's or Vigoro)
Frost & winter protection for citrus (lemon, lime, orange)
Frost plan
When: from 2 weeks before to 1 week after the first fall frost.
- zones 8–10: about Nov 17 – Dec 8
Most citrus are damaged below 28–32°F (−2 to 0°C), and lemons and limes are the most tender.
- Move containers indoors or into a garage before nights drop below 35°F/2°C.
- In-ground trees: water the soil well before a freeze, then cover to the ground with frost cloth at dusk. String incandescent or C9 lights underneath for extra warmth.
Common citrus (lemon, lime, orange) problems and how to fix them
Yellow leaves with green veins
Signs: Interveinal chlorosis.
What to do: Usually a lack of iron, zinc, manganese or magnesium. Use a citrus fertilizer with micronutrients, plus chelated iron.
Scale / mealybugs
Signs: Bumps or cottony masses on stems, sticky leaves.
What to do: Horticultural oil (summer rate) or insecticidal soap, repeated every 2 weeks.
Leaf drop indoors
Signs: Sudden leaf drop after moving inside.
What to do: Light shock. Move the plant gradually and use grow lights.
Citrus (lemon, lime, orange) care FAQ
When should I prune citrus (lemon, lime, orange)?
Light prune after harvest: from the last spring frost to 4 weeks after (around Feb 25 – Mar 25 in zones 8–10). Evergreen fruit trees for frost-free or near-frost-free climates, or containers moved indoors for winter. They're heavy feeders that need micronutrients and minimal pruning.
What is the best fertilizer for citrus (lemon, lime, orange)?
Citrus are hungry, especially for nitrogen and micronutrients, and need feeding 3 times a year (or monthly in containers). Good options: Organic citrus food (e.g. Espoma Citrus-tone 5-2-6); Citrus & avocado fertilizer with micronutrients (e.g. Jobe's or Vigoro).
What soil does citrus (lemon, lime, orange) need?
Very fast-draining; sandy loam or citrus potting mix. Preferred pH 6.0–7.0. Containers: cactus and citrus mix. Avoid heavy garden soil.
How much sun and water does citrus (lemon, lime, orange) need?
Sun: Full sun, 8+ hours; bright window or grow light indoors. Water: Water deeply when the top 2 in (5 cm) is dry. Keep evenly moist, never soggy.
What are common citrus (lemon, lime, orange) problems?
Yellow leaves with green veins: Interveinal chlorosis. Usually a lack of iron, zinc, manganese or magnesium. Use a citrus fertilizer with micronutrients, plus chelated iron. Scale / mealybugs: Bumps or cottony masses on stems, sticky leaves. Horticultural oil (summer rate) or insecticidal soap, repeated every 2 weeks. Leaf drop indoors: Sudden leaf drop after moving inside. Light shock. Move the plant gradually and use grow lights.
More fruit care guides
Timings are given relative to your average frost dates, with examples for typical US climates. Always read and follow product labels.