Photo: jotor at Flickr — CC BY-SA 2.0 · source
Survives zone 5 through 8
Harvest calendar
Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.
Colorado pinyon is the classic wild-harvested piñón of the American Southwest — thin, wingless seeds about 1–1.5 cm long, sweet and oily, that were a winter staple for Southwestern Indigenous peoples and are still gathered commercially each autumn by Navajo and Hispano families.
- Hardiness
- Zone 5–8
- Habit
- Tree
- Edible part
- Nut
- Ripens
- Autumn (cones)
- Mature size
- Small tree 6–12 m, often shrubby on poor ground
- Light
- Full sun — cone/seed set needs sun
- Soil pH
- 5.0–7.0
- Environment
- Semi-arid
- Native range
- Southwestern United States (Colorado, New Mexico, Utah, Arizona and neighboring states) and northern Mexico (Chihuahua, Sonora), typically at 1,500–2,100 m in piñon-juniper woodland.
- Status
- Both wild and cultivated
- Years to fruit
- ~25 yrs for first cones; heavy commercial-scale crops not until 75–100 yrs, and even mature stands yield a big harvest only once or twice a decade.
- Growth speed
- Very slow — about 5 cm/year until roughly 1 m tall, then somewhat faster.
- Spacing
- 600 cm (236 in) apart — about 36 m² (388 sq ft) per plant
- Leaf shape
- Needles usually in fascicles of two (occasionally one or three), 2–4 cm long, blue-green with pale stomatal bands.
- Root system
- Deep taproot reaching 6 m (20 ft) or more, plus shallow lateral roots extending to twice the crown radius — a strategy suited to arid ground.
- Fruit description
- Cones are small and globose, 3–5 cm across, with thick, rounded scales; each holds 10–20 large, wingless brown seeds 8–16 mm long with a thick shell — a good crop tree can yield up to 20 lb (9 kg) of nuts.
- Propagation
- By seed, requiring about 4–8 weeks of cold, moist stratification; sow shallow (roughly 2.5 cm deep) in gritty, well-drained mix. Named selections are not commonly grafted.
- Pollination
- Monoecious, wind-pollinated — plant more than one
The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.
Growing guide
Fertilizing. Adapted to poor, rocky, alkaline soils and needs no routine feeding; it relies on ectomycorrhizal fungi for nutrient and water uptake, so inoculating with soil or duff from an established stand at planting helps far more than fertilizer.
Growing tips. Notably slow to bear — trees may not produce their first cones until around 25 years old, and heavy seed crops don't arrive until 75–100 years of age, with even good stands yielding a large harvest only once or twice a decade. Mature trees reach 5–15 m (occasionally to 21 m) and are very drought tolerant once established.
Grow journal
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