Mexican Buttonbush
Cephalanthus salicifolius
Last reviewed: September 2026
Toxicity unknown
Mexican Buttonbush (Cephalanthus salicifolius) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
medium
Size
96"–216" H × 48"–120" W
Bloom
Mar, Apr, May, Jun, Jul, Aug
Native to
TX
Pollinators
butterflies, bees, nectar insects
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 458 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Mexican Buttonbush is a large deciduous shrub that produces distinctive white, spherical flower clusters from spring through summer. It can reach up to 18 feet tall and 10 feet wide, making it suitable for larger landscape areas. The plant thrives in full sun with moderate water requirements.
In an HOA neighborhood
Mexican Buttonbush takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Height exceeds typical HOA-friendly range
Wildlife value
This shrub is excellent for pollinators, attracting butterflies, bees, and other nectar-feeding insects throughout its extended blooming period. The long flowering season from March through August provides consistent nectar resources.
Common questions
- How much sun does Mexican Buttonbush need?
- Mexican Buttonbush grows best in full sun conditions.
- When does Mexican Buttonbush bloom?
- Mexican Buttonbush blooms in March, April, May, June, July, and August.
- Where is Mexican Buttonbush native?
- Mexican Buttonbush (Cephalanthus salicifolius) is native to TX, per vouchered herbarium specimen records and regional native plant society lists.
- What pollinators does Mexican Buttonbush attract?
- Mexican Buttonbush draws butterflies, bees, and nectar insects.
- Is Mexican Buttonbush HOA-friendly?
- Mexican Buttonbush takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Mexican Buttonbush? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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