When to plant Summer squash (zucchini) in Connecticut
In spring, from Apr 20 – June 1 in Bridgeport to May 10 – June 10 in Torrington.
In fall, June 1 – July 20.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Ansonia | May 1 – June 15 | June 1 – July 20 |
| Bridgeport | Apr 20 – June 1 | June 1 – Aug 10 |
| Bristol | May 1 – June 15 | June 1 – July 20 |
| Danbury | May 1 – 30 | June 1 – July 15 |
| Derby | May 1 – June 15 | June 1 – July 20 |
| Groton | May 1 – June 15 | June 1 – Aug 1 |
| Hartford | May 1 – June 15 | June 1 – Aug 1 |
| Meriden | May 1 – 30 | June 1 – July 20 |
| Middletown | May 1 – 30 | June 1 – July 20 |
| Milford | Apr 20 – June 1 | June 1 – Aug 10 |
| Naugatuck | May 1 – June 15 | June 1 – Aug 1 |
| New Britain | May 1 – June 15 | June 1 – Aug 1 |
| New Haven | May 1 – June 15 | June 1 – Aug 1 |
| New London | May 1 – June 15 | June 1 – Aug 1 |
| Norwalk | May 1 – June 15 | June 1 – July 20 |
| Norwich | Apr 20 – June 1 | June 1 – July 20 |
| Shelton | May 1 – June 15 | June 1 – July 20 |
| Stamford | May 1 – June 15 | June 1 – July 20 |
| Torrington | May 10 – June 10 | June 1 – July 1 |
| Waterbury | May 1 – 30 | June 1 – July 20 |
| West Haven | May 1 – June 15 | June 1 – Aug 1 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for summer squash.