Daffodils pushing through wet soil and tulips opening on a gray spring morning are the sights that make an Oregon yard feel awake again. Tulips, daffodils and crocus all settle in well here, and a few types return year after year with little attention.
Best Spring Bulbs to Grow in Oregon
Tulips, daffodils and crocus are the dependable spring bulbs for Oregon yards, and the tougher forms of each earn their place by coming back for years. Oregon’s range is wide, from USDA zone 4a to 9b, so hardiness matters more than showiness.
Darwin Hybrid Tulips
Darwin hybrids are bred to return for several years, which sets them apart from many big tulips that fade after a short time. They suit a bed where you want tall, classic color without replanting every fall.
Emperor Tulips
Emperor tulips share that bred-in staying power. Plant them in groups so the blooms read as a block of color, and expect flowers in March, April and May, depending on the variety.
Species Tulips
Species tulips are less showy than the big hybrids, but they are very hardy and well suited to naturalizing. They are smaller and more likely to return each year, which makes them a good fit for rock gardens, path edges and lawn borders.
Crocus
Crocus is an early bloomer, and a sensible place to start if you are building a spring display from scratch. Squirrels and voles eat tulips and crocus, and slugs go after crocuses, so tuck them where you can keep an eye on them.
Daffodils
Daffodils, also sold as narcissus, are the more reliable perennial bulb. Choosing early and late varieties stretches the color into early summer. Because their sap burns the mouth, animals leave them alone, so they hold up in yards where tulips get eaten.
Oregon — the year and the numbers
- State
- Oregon
- USDA zones
- 4a-9b
- Last spring frost
- March 6 to March 21
- First fall frost
- November 11 to November 27
- Annual rain
- 37 in
- Lawn zone
- transition-season
- Source
- NOAA NCEI U.S. Climate Normals 1991-2020, 32F freeze probabilities · Portland
How to Choose Spring Bulbs for Your Oregon Garden
Start with how much time you want to spend and how cold your winters run. A yard in the Willamette Valley and a yard on the high desert call for different planting dates and different bulbs.
Chill matters too. Most spring-flowering bulbs need about 12 to 16 weeks of cold to flower.
| Your situation | What suits it in Oregon | Why |
|---|---|---|
| Very cold winter | Species tulips and daffodils | Species tulips are very hardy, and colder interior yards are planted from late September through October. |
| Little time to spare | Daffodils, Darwin hybrid tulips, Emperor tulips | Daffodils are the more reliable perennial, and these tulip types are bred to return for several years. |
| Small space | Species tulips and crocus | Species tulips are smaller and more likely to return, and crocus starts the season early. |
| Deer, rabbits or squirrels visiting | Daffodils | Animals leave daffodils alone but eat tulips and crocus. |
| Winters too mild to chill the bulbs | Tulips and hyacinths, chilled in the refrigerator first | Chilling gives them the cold they need before planting. |
Hyacinths need chilling ahead of time in a spot where winters are too mild.
Which Spring Bulbs Suit Different Parts of Oregon
Gardening conditions change at the Cascades, and the planting window and bulb choice shift with them.
- Portland and the Willamette Valley: Western Oregon has a long fall planting season, and October and November suit it best. Bulbs can go in as late as mid-December if the soil can still be dug, so tulips, daffodils and crocus all have room to work.
- Central and Eastern Oregon: The high desert has colder winters, so bulbs go in earlier, from late September through October, to give roots time to form before the ground freezes. Favor hardy daffodils and species tulips here.
Whichever side you garden on, tulips and daffodils flower from March into May.
Spring Bulb Buying Mistakes to Avoid in Oregon
Counting on Tulips to Last
Tulips are often short-lived in the garden, so a bed of showy hybrids can thin out over time. Buy daffodils for the long haul, and treat tulips as a bonus. Darwin hybrids, Emperor tulips and species tulips can come back in later years.
Skipping the Chill
A bulb that never gets enough cold will sulk or fail to flower. In a spot where winters are too mild, chill tulips and hyacinths in the refrigerator before planting. Alliums skip this step and can go straight into the ground.
Holding Bulbs Over the Winter
A bulb left sitting in the bag is better planted late than stored. Put it in as long as the ground can be dug. Wait until the soil has cooled below about 60°F so the bulbs form roots without sprouting in the fall.
Where to Get Spring Bulb Advice in Oregon
Local advice settles questions about a particular yard, such as soil, elevation or a tricky slope. Oregon State University Extension publishes planting guidance, and your county office can help with local conditions.
- The extension website carries planting articles, best read before bulbs go on sale.
- Your county extension office can tell you how much cold your area gets and when planting should start.
Common Questions
Which Spring Bulbs Do Deer and Squirrels Leave Alone?
Daffodils. Their sap contains needle-sharp crystals that burn the mouth and damage internal organs, so animals avoid them. Voles, squirrels, rabbits and deer all eat tulips and crocus.
Do Alliums Need a Cold Period to Bloom?
Yes. According to Iowa State University Extension, alliums need the cold of winter to bloom. They close out the season of spring bulbs.
Should You Cut Back Daffodil and Tulip Leaves After the Flowers Fade?
Remove only the faded flowers. Leave the leaves until they turn brown, since they feed the bulb for next year’s bloom.