Transplanting a Water Oak: Root Ball Size, Fertilizing, and Aftercare

Survival Odds

Oaks are notoriously transplant-sensitive. A small root ball drastically reduces survival. If the ball was less than 10–12 inches diameter per inch of trunk caliper, expect decline.

Immediate Care

1. Water deeply after planting to settle soil around roots.
2. Stake loosely—allow trunk movement to stimulate root growth.
3. Apply winter fertilizer (high potassium, e.g., 8-5-15) now. Poke holes at drip line and water in.
4. Mulch 3 inches with compost, keeping it off the trunk.

Ongoing

• Fertilize once per season (spring, summer, fall) with balanced tree fertilizer.
• Water weekly during dry spells for the first two years.
• Monitor for dieback; consult an arborist if large branches fail.