Planting Citrus Trees: Spacing, Soil, Watering, and Mulching

Homeowner plans two lemon and two mandarin trees in new backyard. Asks about spacing, planting technique, fertilizer at planting, watering schedule, and stone vs. bark mulch.

Spacing and Planting

Space 20-25 feet apart (similar to semi-dwarf apples). Key steps:

1. Full sun, out of wind, not in lawn/frequently watered bed
2. Test drainage: hole 10% shallower than rootball, fill with 12" water twice—second fill must drain in <6 hours
3. Plant rootball 1" above grade
4. Backfill with native soil (lower), amended soil with 1/3 organic matter (upper 12")
5. Build irrigation berm around rootball
6. Remove most fruit to reduce transplant shock

Watering Schedule

• First 12-18 months: keep rootball moist (every 3-4 days initially)
• After 9 months: every 7-14 days
• After 18 months: every 10-12 days, or 1-2x monthly
• Probe with screwdriver to verify moisture
• Extra water during hot, dry winds

Fertilizing

Start immediately (nursery plants on constant feed). Slow-release in planting hole or monthly light feeding for 1-2 years, then every other month at 2 years, twice yearly (Feb/June) at 6 ft tall.

Trunk Protection

Paint exposed bark with 50% diluted white latex paint in hot areas to prevent sunscald.

Mulch Decision

Bark preferred over stone—more insulating. Max 4 inches deep to avoid smothering roots.

Follow-Up Clarifications

Bark confirmed for seasonal use in cold-winter climate. Stone holds heat (bad for roots if shallow); bark insulates.