Sunday, March 16, 2014

Hulthemia Persica Seedlings (Part 1)

These most ancient of roses, Hulthemia persica, from Persia (Iran), have now begun to grow here in Bakersfield.  Though their cotyledons appear rose like, their first true leaves do not.  They are not compound like roses (having many leaflets), but just have a single leaf coming directly from the stems.  It hasn't taken them very long to germinate and grow!

As can be seen in the lower left seedling, powdery mildew is already affecting some of these seedlings. Germination has been fair so far with 16/73 seeds sprouting (22% germination rate).  This is very similar to the average germination rate that I see in rose seeds (varies widely depending on the rose seed parent).  I wonder how many years it will take these seedlings to bloom?


  1. Hi Jim,

    Great to see that you've been able to go 'straight to the source' here. Hoping you get some flowering plants by next year. We'll all be eager to see if you can get those genes directly into some of your plants and/or some other rose species you're working with. About to get my first blooms from last year's seeds within a couple of weeks here. Hopefully a few good blotches!


  2. Just wondering if there is a way to get some rosa persica seeds. I have been searching since I discovered it and it seems like you might be in the know. its one of the most beautiful things I have seen and I feel like I am in a good environment to grow it based on my research. Any guidance you can provide would be greatly appreciated.