Best Spring Bulbs for California

Bulbs wait in a bag by the door while the soil cools in fall, and California’s climate decides which of them will actually flower. Along the coast and in the south, winters are too mild for tulips to rest properly, so alliums and paperwhite-type narcissi tend to give the most reliable spring show. Colder inland gardens can grow nearly everything.

Best Spring Bulbs to Grow in California

Coastal and southern California is frost-free, and no freeze occurs there in an average year. That sounds like a gift, but tulips and other northern bulbs need a cold resting period, and mild winters simply do not provide it. Bulbs that skip the chill, or that tolerate warm winters, are the ones to build around.

Alliums

According to Iowa State University Extension, ornamental onions need the cold of winter to bloom, so they are not a natural fit for gardens where winter never turns cold. They also finish the bulb season rather than start it, so they carry color late into spring.

Paperwhite Narcissi

The polyanthus narcissi, paperwhite among them, do well where winters are warm. They are the right narcissus for frost-free yards. Plant them once the soil has cooled and leave them in place after bloom.

Grand Soleil d’Or

This golden polyanthus narcissus belongs with the paperwhites for mild-winter gardens. It handles the same warm conditions and flowers without the long cold spell that true daffodils depend on. Group it in clumps for the most visible color.

Chinese Sacred Lily

Another polyanthus narcissus, sold under this common name, and a reliable performer where winters stay mild. It is a useful alternative for gardeners who want a fragrant narcissus without relying on cold weather that never arrives.

Tulips

Most spring bulbs need about 12 to 16 weeks of cold to flower, and where winters are too mild to give it, tulips and hyacinths are chilled in the refrigerator before planting. In California, chilling the bulbs 4 to 6 weeks before planting ensures a better bloom.

Daffodils

Daffodils last longer than tulips and are the more dependable perennial bulb. They suit the colder parts of the state, where winter gives them their rest. In warm-winter gardens, true daffodils disappoint, and the polyanthus types above are the better choice.

How to Choose Spring Bulbs for Your California Garden

Your winter decides the list. USDA hardiness zones in California run from 5a to 11a, which means a gardener in the mountains and one on the southern coast are shopping for different plants entirely.

Match the bulb to the cold you actually get, then to how much effort you want to spend.

Hot, humid summers and very small spaces change the picture in ways that depend on your own yard, so a nearby garden center or county office can fill in those details.

Which Spring Bulbs Suit Different Parts of California

California covers coast, valley and mountain, and the winter cold that tulips and daffodils depend on varies a great deal between them.

• Los Angeles and the southern coast: No freeze occurs here in an average year, so polyanthus narcissi are dependable choices, but alliums need the cold of winter to bloom, and tulips need refrigerator chilling.
• Central Valley: Winters here do freeze, so tulips and daffodils get far more of the cold they need than they do on the coast.
• Northern California: Freezing winters make daffodils and tulips more realistic, while alliums need the cold of winter to bloom.
• Sierra Nevada: Winters are the hardest in the state, and cold-loving bulbs find what they need without any help from a refrigerator.

Never assume the whole state behaves like Los Angeles, because gardeners elsewhere in California deal with real freezes.

Spring Bulb Buying Mistakes to Avoid in California

Tulips Without a Chill

Tulips planted straight from the bag in a frost-free garden rarely get the rest they need, and the result is a weak bloom or none at all. Alliums need the cold of winter to bloom, so chill the bulbs in the refrigerator before planting, or choose polyanthus narcissi instead.

True Daffodils in Mild Winters

Little success can be expected with the true daffodil where winters are warm. The bulbs sprout, flower poorly and fade. In frost-free gardens, switch to paperwhite or another polyanthus narcissus, and save true daffodils for colder ground.

Planting Before the Soil Cools

Spring bulbs go in once the soil has cooled below about 60°F. Plant sooner and the bulbs may sprout in fall, wasting their energy before winter. Plant when the ground has cooled and roots have time to form.

Where to Get Spring Bulb Advice in California

Climate differs enough across California that local advice matters. The University of California Cooperative Extension and your county office can tell you how cold your own winters run.

• University of California Cooperative Extension publishes home garden guidance, which is useful to read before you buy bulbs.
• Your county office can tell you whether your garden gets enough winter cold, so ask before fall planting begins.

Common Questions

What Should You Do with Bulb Leaves After the Flowers Fade?

Remove only the faded flowers and leave the leaves on the plant until they turn brown. The leaves feed the bulb for next year’s bloom.

Do Animals Eat Spring Bulbs?

Voles, squirrels, rabbits and deer eat tulips and crocus. Daffodils are left alone, which makes them a safer pick in yards with wildlife.

Can You Still Plant Bulbs That Stayed in the Bag?

Yes. A bulb that is still in the bag is better planted late than stored over the winter, so plant as long as the ground can be dug.