Temperate Fruits

When to plant: Early spring, while still dormant Harvest window: Many will yield fruit during two windows: May–June, then again August–October, depending on variety. Here is a video on how to harvest figs. Fertilization: If needed, a light application of nitrogen in early spring, while tree is still…

Quince fruits grow on a small tree or shrub (8–12 ft. tall) with twisted, bumpy branches. Grown as a flowering ornamental or for fruit processing. Adapted to many climates. Adapted to many climates. Tolerates “wet feet” better than most other deciduous fruit trees.

Program OverviewThe Plant Pathology Program provides applied research and outreach to support agricultural production across Imperial, Riverside, and San Diego counties. This tri-county region encompasses a wide diversity of crops and growing conditions—from the desert-irrigated systems of Imperial Valley to…

When to plant: January–March Harvest window: August–October, depending on variety Fertilization: Nitrogen in spring and fall, additional applications based on tree age, health, and soil quality Dormant sprays as needed to control scale, aphids, mites, and overwintering psylla.

When to plant: February–March Harvest window: July–October, depending on variety Fertilization: Light (if any) nitrogen in the spring; monitor for possible zinc and potassium needs Prune in dormant season, using the pruning system (cane or spur pruning) based on grape variety.

Integrated Pest Management (IPM) UC IPM website What is IPM? An ecosystem-based process for solving pest problems while minimizing risks to people and the environment. What is a pest? An unwanted organism that damages or interferes with desirable plants.

The University of California has an extensive Integrated Pest Management (IPM) website with a comprehensive section for grapes, including a year-round IPM program and guidelines. The UC IPM guidelines are an excellent source of information on managing pests.

When to plant: January–March Harvest window: July–October, depending on variety Fertilization: Nitrogen in spring, additional applications based on tree age, health, and soil quality Dormant Pruning (January–February) to encourage vigor; Summer pruning (post-harvest) to control vigor

Weed control in vineyards enhances the establishment of newly planted vines and improves the growth and yield of established vines.

The threecornered alfalfa hopper (TCAH) is a vector of Grapevine red blotch virus that causes Grapevine red blotch disease in vineyards. A degree day model was developed to predict the ideal time frame for ground cover management to help reduce TCAH populations in vineyards.