Open Air Flowers
1003 Osos St
Business information on this page (including hours, address, phone number, rating, and licence status) is provided for reference only. Some fields carry their own as-of date; others may be older than they appear. Contact the business directly to confirm current information before visiting or purchasing. See our full Disclaimer.
4.8 ★ (129 Google reviews) · as of 2026-08-06
We don't hold a nursery/dealer licensing registry for CA yet, so we have not checked whether this business is licensed. This is not a finding either way: it means our coverage doesn't reach this state, not that anything is wrong with this business.
Before you visit
Open Air Flowers is an independent business, not part of a chain we track. A listing does not show what is in stock. Call before you visit to check plants, sizes and availability.
We list 16 other places within 10 miles in California, 14 of them independent. The closest in California is Growing Grounds Downtown, 0.1 mi away.
Our directory has 13 listings in San Luis Obispo. Compare them on the San Luis Obispo page.
Growing conditions
- USDA hardiness zone
- 9b
- Avg. minimum winter temp
- 25°F
- Median frost dates
- First ~Dec 11 · Last ~Jan 31
Frost dates: NOAA 1991–2020 Climate Normals, nearest station (SAN LUIS OBISPO AP, CA US, 3.0 km away) .
What's plantable right now
Based on this ZIP's median frost dates, last frost ~Jan 31, first frost ~Dec 11.
Start indoors now
- Artichoke · 120–130 days to maturity
Plant for fall now
- Beets · 55–65 days to maturity
- Broccoli · 65–80 days to maturity
- Brussels Sprouts · 40–50 days to maturity
- Cabbage · 70–85 days to maturity
- Collards · 32–72 days to maturity
- Kale · 50–70 days to maturity
- Kohlrabi · 50–65 days to maturity
- Mustard Greens · 25–50 days to maturity
- Radish · 20–35 days to maturity
- Spinach · 40–60 days to maturity
- Turnip · 50–60 days to maturity
Planting-window sources: , Clemson Cooperative Extension Home & Garden Information Center , Clemson Cooperative Extension Home & Garden Information Center , Colorado State University Extension , University of Missouri Extension , NC State Extension , Purdue Extension (Dept. of Horticulture and Landscape Architecture) , Utah State University Cooperative Extension , Virginia Cooperative Extension, Virginia Tech and Virginia State University .
Planting windows and crop timing here are computed from USDA/NOAA climate data and the university extension sources cited below, not a site visit or soil test. Treat this as a starting point: local conditions vary, and a local nursery or extension office can advise on your exact site. See our full Disclaimer.
Nearby nurseries
- Growing Grounds Downtown San Luis Obispo, CA 0.1 mi away
- Albert's Florist San Luis Obispo, CA 0.4 mi away
- Central Coast Cactus and Succulent Society San Luis Obispo, CA 0.5 mi away
- Eucalyptus House San Luis Obispo, CA 1.6 mi away
- Poly Plant Shop San Luis Obispo, CA 1.9 mi away
- Central Coast Landscape Products San Luis Obispo, CA 2.0 mi away
Frequently asked questions
- What type of business is Open Air Flowers?
- Open Air Flowers is a nursery or garden center in San Luis Obispo, CA; its business type has not been classified.
- What USDA growing zone is Open Air Flowers in?
- Open Air Flowers (ZIP 93401) is in USDA hardiness zone 9b, with an average minimum winter temperature of 25°F.
- What's plantable near Open Air Flowers right now?
- Based on ZIP 93401's frost dates, this is a good time to start 1 crop indoors and start 11 fall crops. See the full list above.
Source: Google Business Profile. Last checked 2026-08-06. See something wrong? Request a correction or removal →