Summer on the mid-Peninsula is warm inland and often foggy toward the coast, and flowers have to cope with both. Here is your guide to summer flowers in San Carlos & the Mid-Peninsula for 2027.

🌻 What’s in Season: June–August

June: Peonies (early, last chance), roses (peak begins), sunflowers, dahlias (early varieties), protea, stock, delphinium
July: Roses (full peak), sunflowers, dahlias (main season), zinnias, gladiolus, hydrangeas, lilies, lavender, California poppies
August: Dahlias (peak), sunflowers, zinnias, rudbeckia, celosia, late-season roses, asters, king protea

Long summer days tend to produce flowers with vivid color and strong stems. This is a typical calendar, and what is available in any week varies, so the stems in a given arrangement can differ from the list above.

📅 Summer Occasion Calendar

Late May–mid June: Graduation season — congratulations bouquets, plants, and gifts (each school sets its own date)
May 31 (Monday): Memorial Day — cemetery tributes and patriotic arrangements
June 20 (Sunday): Father’s Day — arrangements, plants, gift baskets
July 4 (Sunday): Independence Day (observed Monday, July 5) — red, white, and blue arrangements, BBQ centerpieces, hostess flowers
June–September: Wedding season — flowers for couples, hosts, and the people who love them
All summer: Birthdays, congratulations, get well, housewarming, thank you

🌡️ Summer Flower Care

Keep arrangements cool. Summer arrangements last longest away from direct sunlight and windows that heat up in the afternoon, and Peninsula afternoons can be warm inland even when the coast is foggy.
Change the water daily when temperatures climb past 80°F. Warm water grows bacteria faster, and fresh, cool water helps flowers last longer.
Plan the delivery. If the recipient will not be home, say so in the delivery notes and name a shaded porch or covered spot.
For more care tips, see our complete flower care guide.

🎉 Summer Hosting & Outdoor Flowers

BBQs, patio dinners, pool parties, outdoor graduations — summer hosting calls for flowers that can handle warmth and look great outdoors:

Sunflowers, dahlias, and zinnias are among the most heat-tolerant cut flowers. They tend to hold up at outdoor events better than roses or hydrangeas.
Low, compact centerpieces work best for outdoor dining tables — wind will not knock them over and they do not block conversation.
Potted plants as table decor — succulents, herbs, or small blooming plants that guests can take home as favors.

🚚 Delivery All Summer

Same-day delivery is available to San Carlos, Redwood City, Belmont, San Mateo, Menlo Park, Atherton, and Woodside.

Browse our arrangements, plants, and gifts. ☀️