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'Love Potion ™' rose Reviews & Comments
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Initial post
7 FEB 17 by
vasue
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How does Love Potion fare on black spot resistance in wet & humid conditions grown no spray?
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I might have gotten a dud or it doesn't like it here in Z8, but so far, LP has been very BS prone compared to my others grown in the same no-spray conditions. I'm really surprised by it actually. Will report back in if I get her figured out! (Mine is own root)
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Lavenderlace: Note the glossy & dark-green foliage on that one. My experience with glossy & dark-green foliage is they like soaking wet ALKALINE clay (high in magnesium). The only time glossy green foliage broke out in blackspots was when I brought the pH lower by giving them acidic brewer's yeast (high in phosphorus). Glossy DARK GREEN foliage does better with potassium & magnesium fertilizer. They do sell such fertilizer with potassium combined with magnesium. Magnesium gives roses' leaves the shiny & glossy foliage. Magnesium is a co-factor for potassium in retaining water in cell-walls. Magnesium raises the pH, thus balance out the acid-component of sulfate-of-potash. Sandy soil is often deficient in magnesium. Magnesium is what makes clay sticky.
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I'm going to follow your advice and put her in some clay instead of the sandy soil full sun spot that I was going to banish her too. She's not enjoying her pot at all. Thanks for the info!
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The poster Fragrantnutter in Rose forum who posted gorgeous bouquets of her roses? She has sandy soil & alkaline tap water in California, but she amended her sand with bentonite clay and uses high potassium fertilizer. Clay helps to retain moisture & nutrients. Potassium, calcium, and magnesium leach out easily in sand .. these are essential for fungal-prevention. Horse manure has calcium (from the lime added), but iffy on potassium & magnesium. The glossy & dark green foliage has a higher need for such nutrients (more abundant in wet clay). I always put the glossy foliage of modern roses in partial shade .. they wilt easily in hot sun. Examples: Pat Austin, Meilland Romanticas such as Sweet Promise 2007 and Tchaikovsky.
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Update: Straw, you were absolutely right about this one! She did not appreciate my fast draining sandy soil at all. I changed up her soil and have been keeping her very wet. What a difference! BS gone and leaves are now dark and shiny. Thank you!
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Lavenderlace: I'm glad that worked for you !! Last week I received 7 own-root roses from Roses Unlimited, and Barbra Streisand has dark-green & glossy foliage ... she wilted & looked terrible in full-sun, so I moved her to partial shade, and she's doing much better. The glossy & dark green foliage HATES acidic potting soil, and prefers a higher pH, so I always put pea-gravel (pH 9, with a variety of minerals), red lava rock (pH 8.2), or my alkaline clay to UP the pH level. Increase the pH level with minerals make the leaves even shinier & glossier.
There's a Texas A & M University study that shows calcium helps with heat-tolerance for plants. At alkaline pH, there's more potassium & calcium available to prevent wilting in hot sun.
Evelyn also has dark-green & glossy foliage and leaves are shiny my alkaline clay. Betty White is another dark-green & glossy foliage that does better in my high-magnesium clay, than in pH 6.5 potting soil. One Hibiscus nursery stated that alkaline magnesium is what makes leaves glossy. I tested that: bought a Carefree Celebration from HomeDepot, and the leaves were dull in a pot. I gave it some "pea-gravel" water, and after a week, the leaves became shiny & glossy.
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That's interesting that you brought up Evelyn. I just put a couple in the ground a few weeks ago that were doing great in the pots. One is covered in blooms now and the other looks a bit sad, side by side. Thanks again for the info!
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Kim Rupert, a breeder, informed me that Love Potion has a miniature in its heritage, and a bit healthier than average. It's low-thorn.
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The marketing name found on roses at Home Depot, 'Royal Radiance' is the re-naming of the patented rose created by Jack Christensen and introduced by Bear Creek Gardens/Jackson & Perkins
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Now that another winter has begin in Australia, it is time to assess the rose bushes that I got for the last 12 month ......
Love Potion performed a lot better than I expected ..... the grafted plant (on to Fortunania rootstock) that I got is a very good performer ..... and, despite that it is placed in a semi-shaded spot, it went on flowering and repeat flowering from early spring until late autumn.
With the recent onset of the cold winter rain and the sometimes ghastly wind, the flowers have slowly begin to fall.
The fragrance of the flowers can be detected most of the time, and the ruby-mauve colour almost glow in the rising morning sun and the setting evening twilight.
The resistance to black spot is very good compared to other rose bushes in the garden ....... the only downside is that aphids are attracted to its new growth at this time of the year.
Love Potion is certainly a star among the roses that I have collected thus far.
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