What this guide covers
Northern California spans USDA hardiness zones 7a through 10a across five distinct sub-regions, with frost-free growing seasons ranging from 206 days in the Sierra Foothills to 322 days in the warmest Bay Area microclimates. The region’s Mediterranean climate — dry summers with all rainfall concentrated from October through April — separates NorCal gardening from every other zone 7a–10a region in the country. Two gardens in the same USDA zone (one in Sacramento, one in Atlanta) face completely different moisture, soil, and light conditions despite identical frost data.
The book contains 22,200 words across these sections:
Month-by-month planting calendars
Five sub-regional schedules (Bay Area, Sacramento Valley, Wine Country, Sierra Foothills, North Coast) that account for microclimate variation within the same zone. Coastal fog-belt timing differs from inland valley timing by 2–6 weeks for warm-season crops.
50+ crop profiles
Variety recommendations selected for Mediterranean-climate performance: dry-farmed tomato varieties, heat-tolerant greens for Central Valley summers, and fog-adapted warm-season crops for coastal gardens. Each profile includes irrigation requirements calibrated to NorCal’s rainless summer months.
Regional growing strategies
- Mediterranean growing rhythm: the dry-summer/wet-winter cycle as a planning framework with transition timing by sub-region
- Water-smart irrigation engineering — drip system design, mulch-layer depth specifications, and deficit-irrigation thresholds for established crops
- Fog-belt warm-season techniques: heat-unit accumulation data for coastal microclimates and variety selection to compensate for reduced solar input
- Fire season garden preparation — defensible space interaction with garden placement, smoke-exposure impact data, and post-fire soil recovery
- Organic and sustainable approaches: cover-crop calendars, compost tea schedules, and no-spray pest management specific to NorCal’s pest profile
Who this guide is for
Gardeners anywhere in Northern California (USDA zones 7a–10a) who need irrigation, timing, and variety guidance built around Mediterranean-climate conditions rather than the rainfall-based assumptions of national planting charts.
The guide is updated for the 2026 USDA Hardiness Zone Map and includes variety recommendations tested in NorCal Mediterranean-climate conditions. Available in paperback and Kindle on Amazon.