Growing Avocado from Seed in a Pot: Water, Light, and Repotting Guide

Your Avocado Seedlings Are Off to a Good Start

Two avocado plants from seed, 1.5 feet tall, in 6- and 8-inch pots. You’re in New Jersey—outside in summer, inside for winter. You want watering, repotting, and overwintering advice.

Watering: Less Is More

Avocados hate wet feet. Use ceramic (unglazed) pots—they breathe and dry faster. Line bottom with 1 inch gravel. Water only when the top 2–3 inches of soil are dry. In summer heat, that may be every 2–3 days; in winter indoors, every 10–14 days.

Light: Full Sun Outdoors, Bright Window Indoors

Summer: full sun (6+ hours). Winter: south-facing window, supplement with grow light if needed. They need bright light year-round.

Repotting: When Roots Show

Move up one pot size (2 inches wider) when you see roots at drainage holes. Water well 1 hour before repotting to reduce shock. Use a light, well-draining mix (cactus/citrus mix works). Don’t bury the stem deeper.

Overwintering in New Jersey

• Bring indoors before first frost (usually late October).
• Acclimate gradually: 1 week in shade, then 1 week in morning sun, then full indoor light.
• Keep above 50°F. Ideal: 60–65°F.
• Mist leaves daily or use a humidifier—dry indoor air invites spider mites.
• Water sparingly; no fertilizer until spring.

Pruning

Don’t prune yet. Let the trunk thicken. Once the tree is 3+ feet tall, you can pinch the top to encourage branching.

Long-Term Reality

Seed-grown avocados take 7–15 years to fruit (if ever) and won’t come true to variety. But they make beautiful foliage plants. Enjoy the journey!