Olive
Olea europaea
Zones 8–13
Growing
Establishing an olive tree requires prioritizing excellent drainage, as these trees are highly sensitive to waterlogged soil. While they are remarkably drought-tolerant once established, they thrive in a wide range of soil conditions, provided the pH remains between 5.5 and 8.0. If you are planting in a container, ensure the pot has ample drainage holes to prevent root rot. Because these are wind-pollinated trees, they do not rely on insects to move pollen, though the blossoms will still attract various pollinators to your garden.
When managing your tree, keep in mind that different varieties offer distinct growth habits. For instance, the wilder *O. e. var. sylvestris* tends to stay much smaller and more shrub-like than the standard cultivated varieties, producing smaller fruit. Unlike many other stone fruits, olives do not continue to ripen once they are removed from the branch. You must harvest the fruit when it has reached your desired level of maturity.
After harvesting, wash the olives thoroughly before you begin any preservation process. Because of their natural bitterness, olives are rarely eaten straight from the tree; instead, they are typically prepared through fermentation or pickling. For long-term use, you can also preserve them by canning or drying.
| Sun | full sun |
|---|---|
| Water | low |
| Grow time | >150 days |
| Height | >6ft |
| Spacing | >24in |
| Full sun | ✓ |
|---|---|
| Part shade | ✓ |
| Shade | ✗ |
| Life cycle | perennial |
|---|---|
| Category | tree fruit |
| Growth habit | tree |
| Season | warm |
| Frost tolerance | half hardy |
| Height | over 6ft |
| Spacing | over 24in |
| Days to maturity | over 150 |
| Water | low |
|---|---|
| Drainage | well drained |
| Soil ph min | 5.5 |
| Soil ph max | 8.0 |
| Propagation | |
| Seed | ✓ |
| Cutting | ✓ |
| Division | ✗ |
| Graft | ✓ |
| Tuber bulb crown | ✗ |
| Transplant | ✗ |
| Container ok | ✓ |
| Pollination | wind |
| Pollinator friendly | ✓ |
| Toxic parts | |
| Leaves | ✗ |
| Seeds | ✗ |
| Raw | ✗ |
| Wash before storing | ✓ |
|---|---|
| Ripens off plant | ✗ |
| Curing days | over 2wk |
| Shelf life | over 3mo |
| Storage methods | |
| Room temp | ✗ |
| Cool dark | ✓ |
| Fridge | ✓ |
| Freeze | ✓ |
| Can | ✓ |
| Dry | ✓ |
| Ferment pickle | ✓ |
| Blanch before freezing | ✗ |
| Not suited to zone 7. Grows in zones 8–13. |
References: Wikipedia · USDA PLANTS: Olea europaea (OLEU) · how this data is made