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Fruits, Nuts & Perennial Crop CalendarsPecan Calendar
Pecans need a long, warm growing season, and the calendar runs from late bud break to a fall harvest that depends on shuck split. Pollination type is the quiet detail that often decides yield.
Key points
- Pecans need a long, warm season for nut fill.
- Match pollination types so bloom overlaps.
- Alternate bearing is common, so plan for swings.
- Dry and store nuts carefully to protect quality.
- Watch water during nut fill, because drought hurts size and quality.
What climate do pecans need?
Pecans grow best where summers are long and warm enough for nuts to fill, and winters give some chill. They are native to river bottoms in the South and Midwest, and extension programs in Texas, Oklahoma, Georgia and neighboring states publish most of the guidance.
Hardiness zones describe winter minimums only, so ask extension about the growing season length and variety recommendations for your county. Northern selections exist for shorter seasons.
A grower in a cooler area should ask about early-maturing varieties, since nuts that do not fill before frost are a poor crop, and about cold hardiness of the selection you plan to buy.
- Ask about early-maturing varieties for short seasons
- Confirm winter hardiness of the selection
- Check growing season length with extension
What are protandry and protogyny, and why do they matter?
Pecan varieties are either protandrous, shedding pollen before female flowers are receptive, or protogynous, with the reverse order. Matching types that overlap helps ensure good pollination, since wind carries pollen between trees.
When you choose varieties, check which type they are and whether bloom will overlap with other pecans nearby, including wild or neighbor trees. Ask extension for a pollination chart.
- Check each variety's bloom type
- Plant compatible pairs where trees are few
- Count nearby trees that may supply pollen
When do pecans break bud and bloom?
Pecans are late to leaf out in spring, which protects them from many frosts. Bloom follows leaf-out, and the timing varies by variety and by year. A warm spring can advance every stage.
Keep a log of bud break and bloom each year. After several seasons you will know how your own trees respond to your weather.
After bloom, nuts size up through summer, and the tree's water needs rise. This is when drought stress does the most damage to the current year's crop.
How do you care for pecans through summer?
Pecans need steady water during nut fill in late summer, and drought at that time reduces nut size and quality. Young trees need regular watering and mulch for several years. Check local water rules.
Pecans often need zinc and other nutrients in some soils, so a soil and leaf test is the guide to feeding. Nutrient management rules vary by state. Avoid guesses, and let local recommendations determine your plan.
- Water steadily during nut fill
- Base feeding on soil and leaf tests
- Mulch young trees
What is alternate bearing and how do you manage it?
Many pecan varieties tend to bear heavily one year and lightly the next. A heavy crop uses much of the tree's energy, which reduces flowering the following year. Good care, including water and nutrition, softens the pattern but does not eliminate it.
Plan cash flow, storage and labor with that swing in mind. Keep records of yield by variety to understand your own trees.
Thinning is not common in home plantings, but extension offices sometimes advise on managing heavy crops to protect limbs and next year's bloom. Ask what applies to your trees.
When are pecans ready to harvest?
Harvest begins when the shuck splits open and nuts are ready to drop. Timing depends on variety and season, and nuts come down over several weeks. Gather nuts promptly, because squirrels, birds and moisture take a toll.
Dry nuts before storage and keep them cool and dry, since oils in the kernel go rancid. Clean and sort nuts, and ask extension for storage and food safety guidance if you sell them.
Expect that not every nut will fill. Shake a few nuts and listen, then crack one to check the kernel. Hollow or shriveled kernels point to stress during fill.
- Watch for shuck split
- Gather nuts every few days
- Dry nuts before storing
What pests and diseases should you know about?
Pecan scab, pecan weevil, aphids and nut casebearer are among the issues, depending on region. Wet weather raises scab pressure. Scouting and sanitation help, and variety choice matters a great deal for scab resistance.
This guide gives no product names or rates. Follow your extension guide, use only labeled products as directed, observe pre-harvest intervals, note that applicator licensing varies by state, and protect pollinators.
Squirrels, crows and blue jays take their share. Gather nuts often and keep them off damp ground to reduce losses.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.