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When to Plant Crocuses in Hawaii

Among the very first flowers of spring, crocuses push through snow to signal winter's end. A tiny miracle every year.

The Short Answer

Crocuses are planted in fall in Hawaii, 8 weeks before your first frost date. That means planting around None in Coastal Hawaii.

Hawaii Frost Dates

Your planting dates depend on which part of Hawaii you're in. Here are the frost date ranges by region:

Region	Zones	Last Frost (Spring)	First Frost (Fall)
Coastal Hawaii	11a, 11b, 12a, 12b, 13a	None	None
Upcountry/Mountain	10a, 10b, 11a	Rare	Rare

Crocuses Planting Schedule for Hawaii

Coastal Hawaii (Zones 11a, 11b, 12a, 12b, 13a)

Average last frost: None · Average first frost: None

Fall Planting

8 wks before first frost

Upcountry/Mountain (Zones 10a, 10b, 11a)

Average last frost: Rare · Average first frost: Rare

Fall Planting

8 wks before first frost

Growing Crocuses in Hawaii

Crocuses in Hawaii's Climate

Spring crocuses are not viable in subtropical zones — zero winter chill means no bloom. Autumn crocus (Crocus sativus, the saffron crocus) planted in September may work in north Florida. For early-season color, look to freesias, ranunculus, and anemones instead.

Soil Considerations for Hawaii

Volcanic soils — extremely fertile but can be acidic. Excellent drainage on slopes. Varies dramatically by island and elevation.

Hawaii Climate & Growing Season

Tropical. Year-round growing season at lower elevations. Elevation creates microclimates. Plant warm-season crops anytime. Crocuses can handle frost well, which is an advantage in Hawaii's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Hawaii: Coastal Hawaii (11a, 11b, 12a, 12b, 13a) has a last frost around None, while Upcountry/Mountain (10a, 10b, 11a) sees frost end around Rare. This difference matters for crocuses — adjust your planting dates to match your specific region.

Growing Tips

Plant in large drifts for maximum impact. They naturalize beautifully in lawns — just delay mowing until foliage yellows.

Companion Planting

Plant crocuses alongside these companions for better growth:

Daffodils Snowdrops

The Bottom Line

Crocuses can be grown successfully across Hawaii, but your exact planting dates depend on which region you're in. Coastal Hawaii gardeners should plan around a None last frost, while those in Upcountry/Mountain can typically plant later. For exact dates based on your zip code, use our free planting date finder.

Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026