Hass Avocado Tree Care Guide
Step-by-step Hass avocado tree care guide for grafted seedlings. Ships 20–28 in tall in nursery grow bag with soil. Rich, buttery fruit in 3–4 years.
Shipping restriction: Due to agricultural regulations, we cannot ship this plant to: CA, FL, AZ, HI. Orders to these states will be cancelled and refunded. This protects your local agriculture from pests and diseases. See full shipping policy.
Year-round care calendar
- First citrus/avocado fertilizer of the year
- Inspect for winter damage on branch tips
- Begin weekly deep watering as temperatures rise
- New spring growth flush — normal to see some leaf drop
- Apply 3-inch coarse mulch ring (keep 6 inches from trunk)
- Increase watering to 2× per week as heat builds
- Deep water 2–3× per week if temperatures exceed 85°F
- Watch for persea mite damage on leaf undersides
- Second fertilizer application (citrus/avocado formula)
- Fruit set — consistent watering is critical, do not skip
- 10–15 gallons per week for young trees, 20+ for mature
- Watch leaf edges for salt burn — flush soil if tips brown
- Deep water weekly — hottest month, highest water demand
- Refresh mulch to 3 inches to retain soil moisture
- Iron chlorosis check: yellow leaves with green veins = treat with chelated iron
- Maintain consistent watering — do not let soil dry completely
- Third fertilizer application
- Begin reducing fertilizer nitrogen ahead of fall
- Reduce water slightly as temperatures drop
- Hass fruit begins to darken on tree — sign of approaching maturity
- Inspect fruit size: mature Hass are 8–16 oz with pebbly skin
- Harvest window opens — pick one dark fruit and counter-ripen to test
- Fourth and final fertilizer of the year
- Prepare frost cloth and stakes for cold nights
- Continue harvesting as fruit matures — fruit holds well on tree
- Install frost protection if temperatures drop below 32°F
- Reduce watering to once every 2–3 weeks
- Harvest continues — Hass peak season is December–March
- Protect young trees (under 3 years) below 32°F with frost cloth
- Water only during extended dry spells — winter rain is usually enough
- Wrap trunks of young trees with tree wrap for frost protection
- Hold all fertilizer until March
- Inspect for frost damage after cold snaps — prune damaged tips in spring
- Light prune crossing or damaged branches before spring growth
- Remove any frost-damaged wood — cut back to green tissue
- Prepare for first fertilizer application in March
Care at a glance
Plant a pair — Hass Avocado Tree - Grafted, Rich & Buttery Fruit + Bacon Avocado Tree
Compatible pollinator pair. Adding a second variety within 50 feet increases yield by 20–30%. Both plants ship together in one box.
$178.00 $160.00 Save 10%
How to plant your Hass Avocado Tree
Harden off in shade
Place your tree in a shaded spot for 2–3 days before planting. This lets the seedling recover from shipping stress and acclimate to your environment. Keep the grow bag soil moist but not soggy. Your tree arrives in a nursery grow bag with soil — grafted, leafed out, and ready to grow. Hass is the gold standard of avocados worldwide — pebbly black skin, rich nutty flesh, and the variety you find in every grocery store.
2–3 days, shaded spot
Dig the hole — wider than deep
Dig a hole twice as wide and exactly as deep as the grow bag. Gently remove the tree from the bag, keeping the root ball intact. Set the root ball into the hole — the soil level from the bag should match ground level. The UF/IFAS Extension recommends backfilling with native soil for strongest root establishment. In heavy clay, plant on a raised mound 12–18 inches above grade.
2× bag width, match soil level
Position, backfill, and water in
Set the tree so the graft union sits 3–4 inches above the soil line. Backfill with the native soil you dug out. Tamp gently with your hands — not your boots. Apply 3 inches of coarse mulch in a 3-foot ring, keeping mulch 6 inches away from the trunk to prevent crown rot. Water deeply with 5 gallons at the base. Hass is Type A — pair with Bacon or Fuerte (Type B) within 50 feet for 20–30% higher yield.
5 gallons, graft union above soil, Type A
Ongoing care: the gold standard
Spring (March–May)
Water: Ramp up as temperatures rise. Begin weekly deep soaks — 10–15 gallons for young trees. Let the top 2 inches dry between waterings. Overwatering kills avocados faster than drought.
Fertilize: First feeding in March with citrus/avocado formula (with zinc and iron). Young trees: 1/4 cup. Mature: 1–2 cups. Scatter evenly under the canopy and water in.
This season: Inspect branch tips for winter damage. Apply 3-inch coarse mulch ring (keep 6 inches from trunk). New spring growth flush is normal — so is some leaf drop. Hass blooms February–March: flowers open female in the morning, male the following afternoon. Cool, wet weather reduces pollination. Second fertilizer in May.
Summer (June–August)
Water: Peak demand — this is the critical season. Deep soak 2–3× per week if temperatures exceed 85°F. 15–20 gallons per week for young trees, 25–30 for mature. Consistent watering during fruit set directly determines fruit size.
Fertilize: Third application in August (citrus/avocado formula). Watch for iron chlorosis: yellow leaves with green veins = treat with chelated iron.
This season: Watch for persea mite damage on leaf undersides (tiny brown spots). Refresh mulch to 3 inches to retain soil moisture. Check leaf edges for salt burn — brown tips mean salts are accumulating in the soil; flush with deep watering.
Fall (September–November)
Water: Reduce slightly as temperatures drop. Soak deeply but less frequently. Let the top 3 inches dry between waterings as evapotranspiration slows.
Fertilize: Fourth and final feeding in October. Do NOT fertilize November through January — dormant roots cannot absorb nutrients and unabsorbed salts burn root tips.
This season: Hass fruit darkens on the tree — skin shifts from green to purple-black. Fruit holds on the tree for months; harvest as needed. Do not wait for softening — avocados ripen after picking. Reduce nitrogen in fertilizer to signal the tree toward fruit maturation rather than leaf growth.
Winter (December–February)
Water: Minimal — only during extended dry spells. Cold soil + wet roots = root rot, the #1 winter killer. Once every 3–4 weeks is usually enough.
Fertilize: None. Resume in February with the first feeding of the new year.
This season: Mature Hass survives brief dips to 28–30°F. Young trees (under 3 years): protect below 32°F — wrap trunk with frost cloth, pile 6 inches of mulch over the root zone. In Zone 8, plant against a south-facing wall for radiant heat. Harvest continues through March. February–March bloom begins the cycle again.
Pruning: keep it reachable
When: Late winter (February–March), before the spring growth flush. Never prune in fall — new growth freezes.
Young trees (years 1–3): Select 3–4 well-spaced scaffold branches. Pinch the central leader at 3–4 feet to encourage lateral branching. Remove all suckers below the graft union immediately — they are rootstock growth and will not produce Hass fruit.
Mature trees: Thin interior for light and airflow — an open vase shape is ideal. Remove dead, diseased, crossing, or downward-growing branches. Control height aggressively — heading cuts (cutting branches back by 1/3) stimulate compact growth. Unpruned Hass reaches 30–40 feet. Keep it at 12–15 feet for reachable harvest.
DON’T: Remove more than 20% of canopy per year. Leave stubs. Paint pruning wounds (avocados seal themselves). Prune during rainy weather (fungal infection risk). Skip a year — neglected trees are harder to reclaim.
What’s wrong with my Hass?
Still stuck? Send a photo to artisticbonsai.sz@gmail.com — we diagnose it for free. Response within 24 hours.
Harvesting Hass Avocados
When: October through March — a remarkable 5–6 month harvest window. Hass fruit turns from green to purple-black and develops its signature pebbly texture when mature. Critical: avocados do NOT soften on the tree. The fruit matures and holds on the branch — you harvest when you are ready to eat.
How to test: Pick one dark, fully-colored fruit. Let it sit on the counter for 3–5 days. If it softens evenly without shriveling or turning rubbery, the rest of the crop is ready. Pick every few weeks during the season — fruit holds on the tree for months but will eventually drop if left too long.
How to pick: Cut the stem with clippers, leaving a short stub attached. Never pull or twist — you will tear the skin and the fruit will rot before it ripens. Use a pole picker for high branches. Handle gently — Hass skin is thick but the flesh bruises.
Ripening: Room temperature, 3–5 days. Speed up: paper bag with a banana or apple (ethylene gas). Ripe when the neck yields to gentle thumb pressure — do not squeeze the body (bruises). Once ripe, refrigerate for up to 3 days.
Frequently asked questions
How long until my tree produces fruit?
A grafted Hass avocado produces its first fruit in 3–4 years. A seed-grown tree takes 10–15 years and the fruit will not be true Hass — it will be a random seedling with unpredictable quality. Our trees are grafted from mature Hass scion wood, giving you the exact variety and a 7–10 year head start.
Do I need two avocado trees for fruit?
No — Hass is Type A and partially self-fruitful. A single tree produces fruit on its own. But adding a Type B pollinator like Bacon or Fuerte within 50 feet increases yield by 20–30% and extends the pollination window. The Type A/B flower timing is one of botany’s most elegant adaptations — read up on it, it is fascinating.
Can I grow Hass avocado in a container?
Yes — in a 25-gallon container with well-draining potting mix, a Hass avocado stays 6–8 feet tall and still fruits. Move it indoors when temperatures drop below 32°F. Use a pot with multiple drainage holes. Avocados die in standing water faster than any other condition. Container trees need more frequent watering and fertilizing at half the rate of in-ground trees.
What temperature kills an avocado tree?
A mature Hass survives brief dips to 28–30°F. Young trees (first 2–3 years) are killed outright by temperatures below freezing. In Zone 8, plant against a south-facing wall, wrap the trunk with frost cloth, and pile 6 inches of mulch over the root zone in November. String incandescent Christmas lights through the canopy for radiant heat during hard freezes.
Why are my avocados dropping before they mature?
Young trees (under 4 years) commonly drop most of their fruit — the tree aborts what it cannot support. This is normal and decreases with age. Other causes: inconsistent watering (fruit drop during dry-then-wet cycles), poor pollination (cool, wet weather during bloom), or the tree simply set more fruit than it can carry. A mature Hass may set 500+ fruitlets and carry 150–200 to harvest — fruit drop is the tree self-regulating.
When should I fertilize my avocado tree?
Four times per year: February (pre-bloom), May (fruit set), August (fruit development), October (pre-winter). Use a citrus/avocado-specific fertilizer with zinc and iron. Young trees: 1/4 cup per feeding. Mature trees: 1–2 cups. Scatter evenly under the canopy — not against the trunk. Water in thoroughly. If leaves show brown tips, reduce fertilizer rate — salt burn from over-fertilizing is common.