Bupleurum (Thoroughwax) in Zone 11a & 11b

Bupleurum rotundifolium

When to plant bupleurum (thoroughwax) in zone 11b

Zones 11a and 11b share the same average frost dates in our data, so this page covers both.

Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Bupleurum (Thoroughwax) tolerates either.

Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.

Bupleurum, also called thoroughwax, is a chartreuse-toned filler flower that reads more like foliage than bloom in a bouquet, useful for softening bolder cut flowers without pulling attention away from them.

How bupleurum (thoroughwax) fits zone 11's season

Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.

Good companions

No standout companions recorded yet for Bupleurum (Thoroughwax).

Where to buy bupleurum seeds

• Botanical Interests
• True Leaf Market
• Burpee
• High Mowing Organic Seeds

See why we recommend these suppliers →

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See it growing

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

← Back to the full zone 11b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Bupleurum (Thoroughwax) in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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