Hi Fermi,
Thank you for all the information.
Here in California I am working on developing forms of Triteleia ixioides with enhanced deep maroon markings on the petals. This is a characteristic I enjoy immensely. Currently I am using both ssp. scabra and unifolia in these hybrids. They are such easy plants to please in the garden, tolerant of a fair degree of summertime irrigation and/or completely summertime xeric conditions.
While on the topic of plants that thrive where summers are extremely hot and dry, here are a few other plants I am working with.
This is Delphinium patens ssp. patens growing in our Sacramento garden. This low elevation California native goes completely dormant during the summer. It is a xeric species that is not bothered by extreme summertime heat or drought. The forms that I grow bloom into the late spring, extending our garden’s bloom period before the garden goes into its summer dormancy.
The flowers of the species range in color from light lavender-pink through deep lavender-blue. Currently, I am working on my second generation of hybrids. I have selections that persist and bloom consistently each season in our Sacramento garden. Extending the color range is another goal.
Pictured is Delphinium hansenii ssp. hansenii blooming in our Sacramento garden. It is another xeric low elevation species.
My favorite xeric, low elevation species is Delphinium gracilentum. This species also has an extended range of flower colors.