A tree is a decades-long commitment, so it's worth choosing well. The right variety in the right place will thrive with little help. The wrong one will struggle every year no matter how much you care for it.
Four questions decide most of it: how cold your winters get, how much winter chill you get, when your last spring frost comes, and whether the tree needs a partner to make fruit. Add the right rootstock, and you can plant with confidence.
- 1Find your hardiness zone and explain what it means.
- 2Understand chill hours and why they matter for fruit.
- 3Protect blossoms from late spring frosts.
- 4Choose pollination partners that bloom together.
- 5Pick a rootstock for the size and soil you have.
How cold does it get?
The USDA Plant Hardiness Zone Map divides the country by the average coldest night of the year. Each zone is 10°F wide, split into "a" and "b" halves of 5°F. The current map, released in late 2023, uses weather data from 1991 to 2020. Look up your zone by ZIP code on the USDA website.
Winter survival
Whether a tree can survive your typical coldest nights. A tree rated for zones 5–8 should survive a zone 6 winter.
Heat, chill or frost
It says nothing about summer heat, winter chill or late frosts, which matter just as much for fruit.
Zones within zones
A south wall can be a half zone warmer; a frost pocket a half zone colder (Permaculture Lesson 1).
Chill hours
Most fruit trees need a certain amount of winter cold before they'll wake up and bloom properly in spring. That's measured in chill hours, classically the number of winter hours between 32 and 45°F.
A high-chill apple planted where winters are mild may leaf out slowly, bloom poorly and set little fruit. In warm-winter places, look for low-chill varieties, some needing only 200–400 hours.
A low-chill variety in a cold place may satisfy its chill early and bloom during a warm spell in late winter, right before a freeze. In cold places, choose varieties with higher chill needs that wait for real spring.
Your county extension office, local nurseries or online chill calculators can tell you your area's typical chill hours. In mountain areas, chill rises with elevation.
Which trees fit your place?
| Tree | Cold | Chill | Needs a partner? |
|---|
Broad, typical ranges. Individual varieties differ a lot: there are low-chill apples and peaches for warm winters and extra-hardy ones for cold places. Use this to narrow the list, then check each variety with your nursery or extension office.
Beating the late frost
A single frosty night during bloom can kill a whole year's crop. Peaches, apricots, plums and cherries bloom earliest and are most at risk; apples and pears bloom later.
- Stay out of frost pockets. Cold air drains downhill and pools in low spots. Plant fruit trees on gentle slopes, above the lowest ground.
- Choose late bloomers for frosty sites, and put the earliest bloomers in the most protected spots.
- Don't push them early. Avoid planting early bloomers against a hot south wall in a cold climate, which can wake them too soon.
- Cover small trees with frost cloth on cold nights during bloom, and keep the ground bare and moist under them, which releases a little heat.
Pollination partners
Many fruit and nut trees can't make fruit with their own pollen. They need a different variety of the same kind of tree nearby, blooming at the same time, with bees to carry pollen between them.
| Usually needs a partner | Usually fine alone |
|---|---|
| Apples (a crabapple works too) | Peaches and nectarines |
| Most pears | Apricots (most) |
| Most sweet cherries | Sour cherries |
| Japanese plums | Some European plums, like Stanley |
| Pawpaws, chestnuts, hazelnuts, pecans | Figs, most Asian persimmons |
Rootstock: choosing the tree's feet
Most fruit trees are grafted: your chosen variety on top, joined to a rootstock that decides the tree's size, how soon it bears, and what soils it tolerates. Apples have the widest choice.
| Apple rootstock | Tree size | Good to know |
|---|---|---|
| Dwarf | About 8–10 ft | Fruits in 2–3 years and is easy to pick, but has shallow roots and usually needs a post or trellis |
| Semi-dwarf | About 12–18 ft | A good balance for home orchards; often freestanding |
| Standard (seedling) | About 20–30 ft | Slowest to bear but deep-rooted, drought tolerant and long-lived: the classic food forest canopy tree |
- Wet or heavy soil: choose rootstocks rated for it, or plant on a mound
- Dry or sandy soil: more vigorous rootstocks root deeper
- Windy sites: avoid tiny dwarfs, or stake them well
- Ask about disease resistance common in your area
- Your extension office's recommended variety list
- A local nursery, not a big-box store
- Old trees still thriving in your neighborhood
- Native fruits: pawpaw, persimmon, elderberry, serviceberry, wild plum
Build your family's tree list
Gather the climate facts for your place, then build a list of trees that will truly thrive there, with partners chosen and spots picked.
You'll need
- A computer or phone for the USDA zone map
- Your average last frost date (Permaculture Lesson 5)
- A nursery catalog or website that lists chill hours and bloom groups
- Your extension office's fruit variety list, if there is one
- Your base map and food forest patch design
Do it together
- Find your zone by ZIP code on the USDA map.
- Find your chill hours from your extension office or a nursery's chill map.
- Run the fit check above and circle the trees that fit.
- Each person picks a favorite fruit or nut to grow.
- Choose varieties and partners from a catalog: check chill, bloom group and rootstock for each.
- Place them on your map: early bloomers in protected spots, partners within range, nothing in the frost pocket.
Little growers
- Choose a favorite fruit and draw it
- Find your town on the zone map
- Draw bees flying between partner trees
Older growers
- Make a table of each variety's zone, chill, bloom group and partner
- Explain why one tree on the list wouldn't work
- Measure partner distances on the map to scale
Keep the list with your orchard record. In Lesson 4 you'll plant guilds around these trees.
The right tree in the right place
The best orchards aren't the ones with the rarest varieties. They're the ones where every tree suits its place so well that it seems to have chosen it. A little research now saves years of disappointment, and gives your family trees that will bear faithfully for a lifetime.
Next, we surround each tree with helpers: plants that feed the soil, draw in pollinators and protect the roots.
Your Lesson 3 worksheet
Work through these together. Your answers save on this device as you type, and print cleanly for your records.
Progress record
What this lesson practices:
- ScienceClimate patterns and how plants respond to their environment; pollination (NGSS 3-ESS2-2, 3-LS3-2, 2-LS2-2).
- MathReading ranges, comparing data and measuring distances on a map (Common Core 5.G.A.2, 6.NS.C.7).
- GeographyReading climate maps and finding your location.
- ResearchGathering information from catalogs and extension sources.
Standards mapping is a draft. If you use charter or ESA funds, confirm it with your education specialist.
Sources for this lesson
- USDA — 2023 Plant Hardiness Zone Map
- Iowa State University Extension — the new hardiness zone map
- University of Arizona Extension — chilling requirements of fruit trees
- University of Missouri Extension — pollinating fruit crops
- Washington State University — pollination of fruit trees
- University of Maine Extension — rootstocks and dwarf fruit trees