Hi Kitty,
I have Jasmina flopping about on a tripod at present and must agree - it does rebloom but sparingly. I suspect it is a combination of leaving the heps (which I do too) and more likely, the lack of direct sun. Now that yours has reached the canopy, it should have a better repeat. As a lazy gardener who really likes heps, i tend to be slack about deadheading anyway - some roses will continue to pump out blooms (Graham Thomas for example) if it never gets dead-headed but others are a bit more circumspect (suspect Jasmina might be one of those). Never mind, a really decent spring flush is fine and while it is not a continuous bloomer, there should be a later flush around September (much like hybrid musks) regardless of the deadheading. You could try a hit of potassium based food (tomato food?) at midsummer and keep up with the watering as this is not one of the most drought-resistant roses.

My Jasmina doesn't rebloom much for me. A good spring flush, then maybe a few blooms later. She's in a sunny spot, so its not that. I do dead-head, too! I'm hoping its maybe a maturity issue: this summer will be her 3rd in my garden, so maybe she just wasn't old enough. The only other thing I should mention is that I don't fertilize a lot. My roses all get a good dose of organics (alfalfa meal and Rose Tone) in the spring, and then that's kind of it (I just have too many roses - it gets too expensive!) However, this summer I plan to try adding fertilizer to a select few roses (Reine des Violettes, Gertrude Jekyll, Excellenze van Schubert, and Jasmina) to see if I can coax more bloom.

I was wondering if planting it with a tree with agressive roots was the problem. I feed and water generously to compensate for what the tree might take. The rose grows very well and I love the generous first bloom. I would not remove it just because it only blooms once. That one bloom is incredible. Every year is better than the last. I just noticed that some sellers have it listed as constantly repeating. For the first few years I was worried that it might not bloom at all.

here in the UK, I generally get a really good show at the beginning of June and then, either a few scattered blooms throughout the summer for the remontant roses, a rather good second flush with many of the HMs..... and that's about it. Although the blooming (sparse) can stutter on till Xmas in a mild year, I am only really looking at one great flush from all my roses....but hey, I grow phildelphus, deutzias, chaenomeles et al which also only bloom once, and often fleetingly at that, so why get in a tizz if the roses don't go on forever. Which is why heps are a bonus.