North America Native Plant

Kaibab Suncup

Botanical name: Camissonia specuicola specuicola

USDA symbol: CASPS3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Oenothera specuicola P.H. Raven (OESP3)   

Kaibab Suncup: A Rare Arizona Native Worth Knowing Meet the Kaibab suncup (Camissonia specuicola specuicola), a charming little wildflower that calls the high country of Arizona home. If you’ve never heard of this plant before, you’re not alone – it’s one of those special native gems that doesn’t get much ...

Kaibab Suncup: A Rare Arizona Native Worth Knowing

Meet the Kaibab suncup (Camissonia specuicola specuicola), a charming little wildflower that calls the high country of Arizona home. If you’ve never heard of this plant before, you’re not alone – it’s one of those special native gems that doesn’t get much attention in mainstream gardening circles, but absolutely deserves a spot in the conversation about southwestern native plants.

What Makes the Kaibab Suncup Special?

This perennial forb belongs to the evening primrose family and is endemic to Arizona, making it a true local treasure. As a subspecies, it represents a unique adaptation to specific environmental conditions found in its native range. The suncup name hints at its cheerful yellow blooms that open during the day – a departure from some of its evening primrose relatives that prefer to party after dark.

Where Does It Grow?

The Kaibab suncup is found exclusively in Arizona, where it has adapted to the unique conditions of its mountainous habitat. This limited geographic distribution makes it a particularly special addition to native plant gardens in the region.

Should You Plant Kaibab Suncup in Your Garden?

Here’s where things get interesting – and a bit challenging. As a native Arizona species, the Kaibab suncup would be a fantastic addition to native plant gardens, rock gardens, or naturalized desert landscapes. However, there’s a catch: information about this particular subspecies is quite limited, and it may be rare in cultivation.

The good news: As a native species, it’s perfectly suited to Arizona’s climate and would support local ecosystems. Native plants like this one typically require less water once established and provide valuable habitat for native wildlife.

The challenge: Finding this plant may be difficult, and if you do locate it, make sure you’re sourcing from reputable native plant nurseries that grow their stock ethically rather than wild-collecting.

Growing Conditions and Care

While specific growing information for this subspecies is limited, we can make some educated guesses based on its native habitat and plant family characteristics:

  • Sunlight: Likely prefers full sun to partial shade
  • Soil: Probably thrives in well-draining, rocky or sandy soils
  • Water: Once established, should be quite drought-tolerant
  • Climate: Adapted to Arizona’s high desert conditions

As a perennial forb, it lacks woody stems and likely dies back to ground level during dormant seasons, re-emerging when conditions are favorable.

Garden Design Ideas

If you’re lucky enough to find Kaibab suncup, it would work beautifully in:

  • Native plant gardens focused on Arizona flora
  • Rock gardens that mimic desert mountain habitats
  • Naturalized areas where you want to support local biodiversity
  • Collection gardens for rare or unusual native plants

Wildlife and Pollinator Benefits

While specific pollinator relationships aren’t well-documented for this subspecies, plants in the evening primrose family typically attract native bees, butterflies, and other beneficial insects. By growing native plants like the Kaibab suncup, you’re supporting the intricate web of relationships that keep local ecosystems healthy.

A Word of Caution and Encouragement

The limited information available about Kaibab suncup suggests it may be quite rare or at least uncommon in cultivation. If you’re interested in growing this plant, please ensure you source it responsibly from nurseries that propagate rather than wild-collect their plants. Never collect plants from the wild yourself.

Consider this plant a holy grail species for native plant enthusiasts – one to keep an eye out for and celebrate if you ever have the chance to grow it. In the meantime, there are many other wonderful Arizona native plants that are more readily available and can provide similar ecological benefits in your garden.

Sometimes the most rewarding plants are the ones that make us work a little harder to find and understand them. The Kaibab suncup is certainly one of those special plants worth the effort.

Kaibab Suncup

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Camissonia Link - suncup

Species

Camissonia specuicola (P.H. Raven) P.H. Raven - Kaibab suncup

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA