Juglans californica
TAXONOMY
FamilyJuglandaceae
GenusJuglans
Zone7
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Juglans californica, commonly known as the California black walnut, is a tree native to California. It is typically found in the foothills of the Coast Ranges and the Sierra Nevada. This tree is known for its hard, dark wood and edible nuts. It has a dormancy period during the winter months.
ALSO KNOWN AS
California Walnut
Juglans californica var. californica
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
GDD5,475
Dormancy3 Months
pH6.5
Pressure1,013 mbar
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DETAILS
Care Instructions
The California black walnut thrives in direct bright light and prefers moderate temperatures. It requires a period of dormancy during the winter. Regular watering is needed, but the soil should be allowed to dry out almost completely between waterings. Moderate humidity levels are ideal.Harvest
Juglans californica, commonly known as the California black walnut, is typically harvested for its nuts and wood. The nuts are usually ready for harvest in the fall, around September to November, when the husks begin to split and the nuts fall to the ground. To harvest, gather the fallen nuts and remove the husks. The wood, being a hardwood, is often harvested during the tree's dormant season in late winter to early spring to minimize sap loss and ensure better wood quality. Proper care should be taken to avoid damaging the tree during the harvest process.Soil
Juglans californica prefers well-draining loam soil. It can tolerate a range of soil types but does best in soils that are not too compacted. Ensure the soil has good drainage to prevent waterlogging.Fertilizer
This tree does not have high fertilizer requirements. If needed, a balanced fertilizer can be applied during the growing season, but it generally thrives in nutrient-moderate soils.Repotting
Repotting is not applicable for Juglans californica as it is a large tree that is typically planted directly in the ground.Propagation
Propagation of Juglans californica is usually done through seeds. Seeds should be collected in the fall and stratified over the winter before planting in the spring.Pruning
Pruning is required to maintain the shape and health of the tree. It is best done during the dormant season in winter. Remove any dead or diseased branches and thin out crowded areas to improve air circulation.Toxicity
Juglans californica is toxic to pets and humans. The leaves, nuts, and wood contain juglone, which can cause gastrointestinal distress if ingested. It is also allelopathic, meaning it releases chemicals that can inhibit the growth of other plants nearby.Additional
The California black walnut is valued for its wood and nuts. It is also an important species for wildlife, providing habitat and food for various animals. When planting, consider its allelopathic properties and avoid placing it near sensitive plants.REVOLUTIONIZE YOUR PLANT CARE
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