Echinops (Globe Thistle) in Zone 9a & 9b

Echinops ritro

When to plant echinops (globe thistle) in zone 9b

Zones 9a and 9b share the same average frost dates in our data, so this page covers both.

Method: Start indoors: Start indoors from seed, then transplant outside. Echinops (Globe Thistle) needs a head start most zones can't give it by direct-sowing alone.

Start indoors	Dec 28–Jan 4 '27
Direct sow / transplant outside	Feb 22–Mar 1
Estimated bloom	Feb 22 '28–Feb 29 '28 (~365 days after transplanting)

Spacing: about 2 square feet per plant (square-foot-gardening spacing). Mature height: 2.5-4 ft.

Echinops, or globe thistle, is a perennial thistle relative grown for its perfectly round, metallic-blue flower globes, a shape that reads as almost artificial and holds up beautifully as a dried flower.

How echinops (globe thistle) fits zone 9's season

Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. Echinops (Globe Thistle) needs about 365 days from transplant to first harvest.

Good companions

No standout companions recorded yet for Echinops (Globe Thistle).

Where to buy echinops seeds

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See it growing

Search YouTube for "growing echinops (globe thistle)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

← Back to the full zone 9b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Echinops (Globe Thistle) in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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