Cooperative extension offices

UC Agriculture and Natural Resources gardening

Davis, California, serving California. Listed as a reference, not an endorsement.

Overview

UC Agriculture and Natural Resources provides California home gardening, fruit, vegetable, pest management, and Master Gardener resources. This listing is provided for reference, not as an endorsement, certification, ranking, or guarantee of current availability.

Services and programs

  • California home gardening
  • Master Gardener connections
  • Pest management information

What to verify before you go

Contact the organization or review its official source before making a trip, placing an order, joining a garden, or applying for funding. Details that commonly change include:

  • Local county contacts
  • Current hotline services
  • California regional guidance

Related directory resources

Browse all extension offices or return to the directory hub.

Sources and last verified

Source: UC Agriculture and Natural Resources. Last checked 2026-10-04.

UC Agriculture and Natural Resources provides California home gardening resources through UC Cooperative Extension and the Master Gardener program.

What this listing covers

The source includes home horticulture, pest management, fruit and vegetable guidance, and local question support. Advice is intended for California conditions.

Before using the resource

Check the local county program and regional guidance. Current hotline services and classes vary by location.

More tools

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Seed swap matcher

Find reciprocal swaps between two local seed lists.

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Sun calculator

Classify a spot by hours of sun and see what fits.

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What should I plant

Match plants to your sun, space, and goals.

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Can I grow this

Check a plant against your light, space, pH, and season.

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Garden guides

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Greenhouse growing

Greenhouse temperature guide for seeds and seedlings

Use crop-specific greenhouse temperatures for seed germination, seedlings, frost protection, and ventilation, with practical day and night ranges.

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Diagram of a raised bed cross section showing timber walls, a layer of existing soil or coarse fill, and the measured depth of new soil being added.

Materials

How much soil does a raised bed need?

How to measure a raised bed and turn the volume into bags or bulk cubic yards, with a worked example for a common 8 by 4 bed.

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October calendar diagram showing planting windows for garlic, spring bulbs, hardy greens, and cover crops closing as the first fall frost approaches.

Seasonal

What can I plant right now in my garden?

In early October, most US gardeners can still plant garlic, spring bulbs, hardy greens, and cover crops. Here is what is still open and what has closed.

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Diagram of a tulip bulb in a soil cross section planted at about three times its own height, pointed end up, with a depth marker of 6 to 8 inches.

Fall planting

When should I plant tulip bulbs?

Plant tulip bulbs in fall, about 6 to 8 weeks before the ground freezes. Here is how the window shifts by region and how deep to plant.

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Plant library

Browse all plants
Illustration of a hyssop stem topped with a blue flower spike

Herb

Hyssop

Hyssop planting, spacing, pruning, and harvest guidance for home gardens, plus how to tell it apart from anise hyssop.

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Illustration of a comfrey plant with broad lance-shaped leaves

Herb

Comfrey

Comfrey planting, propagation, and cutting guidance for home gardens, including the sterile cultivar that keeps it from spreading.

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Illustration of a strawberry plant with two berries on curved stems

Fruit

Strawberries

A perennial fruit crop that bears for several seasons when beds are mulched, thinned, and renewed.

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Illustration of a blueberry branch with leaves and a cluster of berries

Fruit

Blueberries

A long-lived shrub that demands acidic soil, then repays the preparation for decades.

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Glossary terms

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seeds

Scarification

Scarification is the careful weakening of a hard seed coat so water can enter and germination can begin. Learn when this seed treatment helps and when to avoid it.

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seeds

Seed dormancy

Seed dormancy is a condition in which a living seed does not germinate even when some basic conditions appear suitable. Learn why dormancy can be useful.

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seeds

Seed viability

Seed viability is the ability of a seed to remain alive and capable of germinating under suitable conditions. It is different from germination speed or vigor.

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soil

Soil aggregate

A soil aggregate is a cluster of sand, silt, clay, organic matter, and biological material held together as a crumb or soil structural unit.

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