S. California to Mexico (N. & C. Baja California, Cedros Is.)
Climate
desert or dry shrubland
About
Gambelia juncea is a species of flowering shrub in the plantain family commonly known as the Baja California bush snapdragon or Baja bush snapdragon. Gambelia juncea is a highly variable woody perennial to 1 m (3.3 ft) characterized by long, arching, reed-like stems and showy, bright red, two-lipped tubular flowers. Native to the Baja California peninsula and coastal Sonora, this species is widespread in the region across numerous habitats and has several varieties. It was formerly placed in the primarily South American genus Galvezia, but taxonomic studies have supported the reclassification of the two North American species (the other is Gambelia speciosa) into Gambelia. This species, with a number of cultivars, is widely used as an ornamental shrub for xeriscaping, erosion control, native plant gardens, and wildlife gardens.
How to grow it
Gambelia juncea is utilized in the garden setting as a showy ornamental that requires little water, tolerates a wide range of soils, and flowers nearly year-round with minimal irrigation. The long, red, tubular flowers are attractive to hummingbirds and butterflies. A fine-textured shrub, this species works well for background areas or in combination with bolder native plants and succulents.
This species tolerates well-draining to clay soils. It is well-suited for areas with droughts, aridity, and all-day sun, and is recommended as erosion control for slopes. Water requirements are minimal, as winter rains provide sufficient moisture, but supplemental irrigation during spring months will provide a longer bloom period. This species is not able to tolerate frost.
Where it grows
Gambelia juncea is native to the states of Baja California, Baja California Sur, and Sonora, Mexico. Widely distributed on the Baja California peninsula, it is found from the vicinity of La Misión in northwestern Baja California south to the Cape region at the southern tip of the peninsula in Baja California Sur. It is only absent in the north-eastern part of Baja California and at higher elevations. This species is also found on various islands in the Gulf of California, rarely on the coast of Sonora, and on the Pacific coast islands of Cedros, Magdalena and Santa Margarita.
Text excerpted from the Wikipedia article Gambelia juncea by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.