California blue bells are easy to grow from seed and are great for the wildflower garden! Their cobalt blue blooms make a striking appearance in the garden and look wonderful in rock gardens. This wildflower is quick to bloom, easy to grow, and so beautiful!
Seed pack contents: .5G Sows about 100’
Botanical name: Phacelia campanularia
Planting by Zones
- Plant in fall before seasonal rains for blooms until late summer. Grown as a desert annual.
- Grown as annual. Start seed indoors 8-10 weeks before the last frost. Transplant out after the danger of frost is gone. Prefers warm, sharply drained soil.
Planting California Blue Bell Seeds
- California Blue Bell seeds are very small and should be sown close to the surface of the soil. If you are starting the seeds indoors in transplants or in starter pots, start seeds in a high-quality seed starting mix. Sprinkle the seed on top of well-moistened seed starting soil and cover with 1/16” of finely sifted soil. Seeds will germinate in 15-21 or more days.
- If you choose to direct sow (not recommended) you can sow the seeds in well-worked soil that has been finely raked clear of debris. Cover with 1/16” of well-sifted soil. It is recommended to direct sow your seeds before the seasonal rains in Southern California.
Growing California Blue Bell
- This adorable annual flower works well in native, xeriscape, and naturalized gardens.
Growing California Blue Bell in Containers
- If you are planting in containers, make sure your container is at least 10” deep. The larger the container, the more blooms you will get. Keep in mind containers will dry out faster because they have more surface area and less soil to hold onto moisture. This plant enjoys sharply drained soil.
Harvesting California Blue Bell Flowers
- These adorable blooms do not make for good cut flowers. Flowers are best left to the enjoyment of hummingbirds and other pollinators. Deadhead flowers to prolong blooms.
Southern California Pro-tips
- In Zones 9 and 10, California Blue Bell will grow happily from early spring until late fall.
- DO NOT overhead water as this promotes disease.
- This plant grows well with other low water and southwest native flowers. We love to plant California Blue Bell alongside our Scarlet Sage and our southwest mix. Shop all our flowers here.
Additional Learning Resources
- New to starting crops from seeds? Please watch our Seed Starting Presentation to learn the basics!
- Learn about growing all our crops on our YouTube page!
Having pest issues? Check out the in depth information at the UC Integrated Pest Management site.