New and Unread Tree-Mails
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Name: Rosemary Sacramento, CA (Zone 9b)  reh0622 Mar 1, 2020 11:30 AM CST |
I am curious what the understock might be that was used for a polyantha that I believe is in the Koster family of polyantha's. It has nine leaflets.   |
SW Ohio River Valley (Zone 6b)  vaporvac Mar 1, 2020 2:31 PM CST |
| Do you remember from where you bought it? |
Name: Rosemary Sacramento, CA (Zone 9b) reh0622 Mar 1, 2020 2:48 PM CST |
| I didn't buy it. It's in the public garden where I volunteer. Unfortunately, there's no one formerly involved that I can ask, and the notes and schematic map isn't helpful. This actually looks a little bit different than the suckers I got rid of last year which looked more rugosa-like. |
Sydney, Australia (Zone 10b)  Protoavis Mar 1, 2020 3:36 PM CST |
| It's a form or hybrid of multiflora, the stipules are very multiflora. I doubt you'll find a specific name for it. It may have been a nurseries result from OP that was then used as understock. Look at Poynton's multiflora on HMF, another multiflora understock with with a lot unusual characteristics. Anyone with oryzalin (aka Surflan, Embargo), am looking for a small amount rather than 5litres from manufacturer (min size in Australia....) |
Name: Rosemary Sacramento, CA (Zone 9b) reh0622 Mar 1, 2020 4:24 PM CST |
| Thank you, Protoavis! The description on HMF sounds exactly like what I saw last year, or something very similar. What does OP stand for? |
Sydney, Australia (Zone 10b) Protoavis Mar 2, 2020 12:41 AM CST |
| Open Pollination, not a controlled cross. Randomly, just as an example. A self seedling from the polyantha Baby Faurax. Baby Faurax typically has 5 leaflets. Veilchenblau, Baby Fauraxs alledged parent (or rather sport of) typically has 7 leaflets. As you can see below 9 leaflets and so far the seedling looks very very much multiflora as do many of its siblings.  Anyone with oryzalin (aka Surflan, Embargo), am looking for a small amount rather than 5litres from manufacturer (min size in Australia....) |
Zone 9, Sunset Zone 9 (Zone 9b)   Mustbnuts Mar 2, 2020 6:49 AM CST |
| Such great info! Thank you! Always something new to learn! |
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