Canyon Senna
Senna wislizeni
Last reviewed: October 2026
Toxicity unknown
Canyon Senna (Senna wislizeni) 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
low
Size
48"–72" H × 36"–48" W
Bloom
Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
Native to
AZ, NM, TX
Pollinators
butterflies, bees
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 459 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaPicture natives in your own yard
Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Canyon Senna.
Browse plants for this ecoregion
Canyon Senna is a drought-tolerant native shrub that produces bright yellow flowers from spring through fall. This deciduous plant grows 4-6 feet tall and wide, creating a substantial presence in the landscape with minimal water requirements.
In an HOA neighborhood
Canyon Senna 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
The extended blooming period provides nectar for butterflies and bees from March through November. This plant is particularly valuable as a host plant for certain butterfly species.
Common questions
- How much sun does Canyon Senna need?
- Canyon Senna grows best in full sun conditions.
- When does Canyon Senna bloom?
- Canyon Senna blooms in March, April, May, June, July, August, September, October, and November.
- Where is Canyon Senna native?
- Canyon Senna (Senna wislizeni) is native to AZ, NM, TX, per vouchered herbarium specimen records and regional native plant society lists.
- What pollinators does Canyon Senna attract?
- Canyon Senna draws butterflies and bees.
- Is Canyon Senna HOA-friendly?
- Canyon Senna 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 Canyon Senna? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.