Autumn Olive Tree Zone
Zone 8 olive trees generally require that winter temperatures stay above 10 degrees f.
Autumn olive tree zone. They also require some 300 to 1 000 hours of chill to bear fruit depending on the cultivar. The shrub is widespread in the eastern third of the united states and ontario canada figure 1. Dig a hole twice the diameter of your potted tree and as deep. It can produce up to 200 000 seeds each year and can spread over a variety of habitats as its nitrogen fixing root nodules allows the plant to grow in even the most unfavorable soils.
Zone 7 in the u s. It takes up to 6 years for the bush to mature enough to produce berries if grown from seed. Autumn olive is an invasive woody shrub or small tree that grows to about 20 feet in height. 2 there are several varieties of autumn olive grown in the united states some with thorns or spikes.
The autumn olive shrub propagates easily from cuttings and the seeds sprout well after stratification. A potential alternative crop in. Wildlife mammals and birds regularly encounter autumn olive in the wild and it is abundant and easy for them to find. It does well to zone 3.
Recommended usda zones for autumn olive bushes. Autumn olive is an invasive species that out competes and displaces native plants by creating a dense shade that hinders the growth of plants that need lots of sun. You can find hardy olive trees in commerce that will thrive in usda zone 8. Berry crop breeding production and utilization for a new century acta horticulturae no.
Integrated taxonomic information system. International society for horticultural science. Includes inland areas of the pacific northwest colder regions of california nevada utah and arizona and covers a large swath from the middle of new mexico through northern texas and arkansas most of tennessee and into virginia and even parts of pennsylvania and new jersey. We planted it as an understory in out walnut orchard as walnuts are heavy nitrogen users so they grow faster with an understory of autumn olive.
If you live and garden in zone 8 or warmer you can plant your olive tree outside. The autumn olive plant likes moderate to well drained upland soils and is an excellent plant for windbreaks hedge or borders and is widely used in wildlife plantings. Can olive trees grow in zone 7. Give it a spot with full sun and if needed amend your soil with compost or other organic material so improve the drainage.
Autumn olive is native to asia and was introduced to north america around 1830 for ornamental use soil stabilization strip mine reclamation and food and cover for wildlife. The fruit ranks 27 on our favorite fruits list. Maas ed xxvi international horticultural congress.