Yes, it is, I cut it down and boiled it a bit more. I am not as concerned about it setting up though. I make my own yogurt, and my family eats a lot of oats, homemade waffles, pancakes, french toast etc.... so for me, I can use it just as much as a syrup as a jelly. In fact, I doubled the apple blossom recipe, and it made 7 pints and I had about a qt leftover that I put right in the fridge. We've been using that as a syrup and OMG it is heavenly! Last year the late frost killed all my fruit blossoms so there was no fruit to can last fall. I needed to find something this spring to supplement the pantry and I've been experimenting with all these foraged and often not thought of sources of food to get us by. Here's another recipe that might interest you if you have these flowers nearby: http://www.arcadia-farms.net/2013/05/01/sweet-violet-velly-jelly/
I just printed this one out! I heard my friend talking about this type of jelly just today!!