Pecan (Carya illoensis)

Pecans are not a good choice for Northern California. They require a deep, well-drained soil, a hot climate to mature the nuts properly, and adequate soil moisture. At least two different varieties must be planted for good pollination because even though pecans are largely self-fertile, the flowers are dichogamous, which means that there is little overlap between pollen shedding and stigma receptivity. Most varieties require at least 180 days for nuts to mature. Commercial production in California is limited to the Southern San Joaquin Valley. Pecans are native to the United States and grow well in the south central states. Their native range extends into the Midwest, so there are varieties that will tolerate cold winters and short growing seasons. The varieties listed below require a very long growing season and freedom from frost. They can be tried in the warmest regions of the state. Trees get large just like big walnut trees. Pecans are grown on seedling rootstocks.

Resources

Pecan Links, UC Fruit and Nut RIC
[PDF] Pecan Varieties for Planting in the Home Garden , Paul Vossen, Sonoma and Marin Co. UCCE
[PDF] Harvesting and Storing Your Home Orchard's Nut Crop: Almonds, Walnuts, Pecans, Pistachios, and Chestnuts, Ed Perry, Stanislaus Co. UCCE and Steve Sibbett, Tulare Co. UCCE