Autumn Olive (Garnet)

Garnet Autumn Olive is a productive and hardy fruiting shrub known for its abundant crops of bright red berries and exceptional adaptability. Like other autumn olive varieties, Garnet is valued not only for its fruit but also for its ability to improve soil fertility. The plant is a nitrogen fixer, forming a beneficial relationship with soil microbes that allows it to capture nitrogen from the air and enrich the surrounding soil. This makes it a valuable addition to food forests, permaculture plantings, and challenging soils where other fruiting plants may struggle.

The shrub produces large numbers of small red berries with distinctive silvery speckles that ripen in the fall. The fruit has a pleasant sweet-tart flavor when fully ripe and is commonly used for jams, sauces, fruit leather, and other preserved foods. Autumn olive berries are also notable for their extremely high lycopene content, an antioxidant also found in tomatoes.

In addition to its fruit production, Garnet Autumn Olive is an attractive and resilient landscape plant. The shrub has silvery-green foliage and produces clusters of fragrant cream-colored flowers in spring that attract pollinators. Its tolerance of drought, poor soils, and cold winters makes it one of the most adaptable fruiting shrubs available.

Key Characteristics

Fruit Quality:
Produces small bright red berries with silvery speckles. The fruit has a sweet-tart flavor and is excellent for jams, sauces, fruit leather, and other processed uses.

Harvest Timing:
Typically ripens in mid to late fall depending on climate.

Yield:
Extremely productive once established. Mature shrubs can produce very large quantities of berries annually.

Pollination:
Partially self-fertile but produces heavier crops when planted with another autumn olive variety.

Compatible pollinators may include:
✔ Ruby Autumn Olive
✔ Garnet Autumn Olive

Planting two shrubs nearby generally improves fruit set and yield.

Growing Requirements

Hardiness Zones:
Cold hardy in USDA Zones 3–8, tolerating winter temperatures down to approximately -30°F once established.

Utah Growing Notes:
Autumn olive performs very well in Utah and is highly tolerant of drought, poor soils, and cold winters. Once established it requires minimal irrigation and thrives in challenging growing conditions.

Growth Habit:
A vigorous deciduous shrub that typically grows 8–12 feet tall and wide. Plants can be pruned to maintain a smaller size or trained as a hedge.

Soil & Sun:
Performs best in full sun but tolerates partial shade. Extremely adaptable to a wide range of soils, including poor or sandy soils.

Maintenance:
Very low maintenance. Occasional pruning can help control size and encourage new fruiting growth. As a nitrogen-fixing plant, it can also improve soil fertility for nearby plants over time.