A Seasonal Planting Calendar for California Gardens

California gardening rarely fits a single national calendar. Coastal gardens, inland valleys, foothills, mountains, and deserts experience different temperatures and rainfall patterns. Use this calendar as a seasonal framework, then adjust for your frost dates, heat, elevation, and local conditions.

The central principle for much of California is simple: the cool and rainy season is often an excellent time to establish hardy perennials, shrubs, vines, and native plants, while warm-season annuals and frost-tender plants generally wait for spring.

Fall: Plant for Roots

Fall is one of the most valuable planting seasons in summer-dry climates. Soil is still warm enough for root growth, air temperatures are gentler, and winter rainfall can help new plants establish before summer.

• Plant suitable California natives, perennials, biennials, shrubs, groundcovers, and hardy vines.
• Plant spring-flowering bulbs at the appropriate time for the variety and climate.
• Sow or plant cool-season annuals where winters are mild.
• Group plants by water needs before adjusting irrigation for rainy weather.

Read The Importance of Fall Planting and The Joy of Planting Fall Bulbs.

Winter: Establish, Observe and Protect

In mild-winter parts of California, roots may continue developing even while top growth slows. Winter is a good time to observe drainage, protect frost-sensitive plants, and prepare for spring. In colder areas, delay planting when soil is frozen or saturated.

• Check that containers and planting areas drain freely.
• Protect tender plants when frost is forecast.
• Continue planting climate-appropriate hardy plants when soil conditions permit.
• Plan spring combinations before peak nursery demand.

Winter is also a useful time to assess structure: evergreen shrubs, grasses, seedheads, and foliage reveal whether the garden has year-round balance.

Spring: Plant for Growth and Bloom

Spring brings rapidly lengthening days, warming soil, and strong top growth. Plant after considering your last frost date and the heat that will follow.

• Plant warm-season annuals and tender perennials after frost danger.
• Add pollinator plants with staggered bloom seasons.
• Install vines early enough to establish before intense heat.
• Check irrigation coverage before warm weather arrives.
• Deadhead and prune only according to the needs of each plant.

For design inspiration, explore Spring at the Wave Garden and Annie’s seasonal bloom stories.

Summer: Maintain, Water Wisely and Plan Ahead

Summer planting requires more attentive watering and heat protection. Established summer-dry plants may need little irrigation, but newly planted specimens still need consistent moisture in the root zone.

• Water deeply and according to plant need rather than by surface appearance alone.
• Check containers frequently.
• Deadhead repeat bloomers when appropriate.
• Provide temporary shade or delay planting during extreme heat.
• Begin planning fall planting areas and irrigation zones.

See Summer Vines and Water-Wise Gardening.

Planning by Plant Type

California Natives

Many are easiest to establish from fall through the rainy season. Use our California Native Gardening Guide for site matching and first-summer watering.

Annual Flowers

Some thrive in cool weather and can be planted in fall in mild climates; others are warm-season plants that need spring heat. Check the needs of the individual species.

Perennials and Biennials

Fall planting supports root establishment, while spring offers a broad selection and fast growth. Allow enough time before severe heat or cold.

Vines

Install support before plants become tangled. Hardy vines often establish well in cooler weather, while tender vines generally prefer warm conditions.

Bulbs

Planting time depends on the bulb and whether it requires chilling or special climate treatment. Follow variety-specific guidance.

Use the Calendar as a Framework

Weather varies from year to year. Let soil temperature, frost, heat, rainfall, and the plant’s needs refine the calendar. Browse all plants available from Annie’s and check individual plant pages for the most specific guidance.