Here is what Tepary Bean needs to thrive.

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Tepary Bean

Phaseolus acutifolius

Zones 10–13

Growing

Thriving in extreme heat, the tepary bean is a remarkably resilient legume that can continue to flower and set seed even when temperatures exceed 105°F. Because these plants are adapted to arid environments and utilize deep root systems to find moisture, they are ideal for dryland gardening. However, if you choose to use irrigation, be careful not to overwater. Excessive moisture or heavy rainfall during the growing season can lead to poor establishment and may cause the plant to focus on lush green foliage at the expense of your bean yield.

When preparing your garden, it is wise to perform a soil test to see if any amendments are necessary. While adding nutrients is helpful, avoid over-applying nitrogen; too much nitrogen can actually interfere with the plant's natural ability to fix nitrogen through its root nodules. Keep an eye out for common bean issues like bean common mosaic virus, as well as anthracnose, rust, or various blights and rots.

Once the pods have matured, you can harvest the seeds for use as dry shell beans or even to grind into meal. For long-term use, store your harvested beans in a dry place.

Stats
Sunfull sun
Waterlow
Grow time90–150 days
Height<1ft
Spacing6–12in
Light
Full sun✓
Part shade✗
Shade✗
Traits
Life cycleannual
Categorylegume
Growth habitbush
Seasonwarm
Frost tolerancetender
Heightunder 1ft
Spacing6–12in
Days to maturity90–150
Growing
Waterlow
Drainagewell drained
Soil ph min6.0
Soil ph max8.0
Propagation
Seed✓
Cutting✗
Division✗
Graft✗
Tuber bulb crown✗
Transplant✗
Container ok✓
Pollinationself fertile
Pollinator friendly✓
Toxic parts
Leaves✗
Seeds✗
Raw✗
Post harvest
Wash before storing✗
Ripens off plant✗
Curing daysnone
Shelf lifeover 3mo
Storage methods
Room temp✓
Cool dark✓
Fridge✗
Freeze✓
Can✓
Dry✓
Ferment pickle✓
Blanch before freezing✓
Calendar, zone 7
Not suited to zone 7. Grows in zones 10–13.