Yy Jade is gorgeous! One of my go-to perfumes for spring. I also like Polaire which is a gentle floral chypre scent. There's usually an offer of some kind on in Boots. Picked up my last bottle of Jade for a fiver!
^ soliflores are perfumes based on one central floral note. If you want to learn about which flowers you like the smell of they are great. I have Violets, Rose, freesia, lily of the valley and lavender- enjoy them all and they are great for layering
I'm in my late thirties and I wouldn't use it because I think it's a bit Granny, but then I don't like floral scents anyway which most of Yardley seems to be. I think Chanel No 5 is a Granny perfume too if I'm honest, but it doesn't matter what I think, if YOU like OP, then wear it. Chances are you probably wouldn't like any of the perfumes I wear (strong, spicy or fruity) because we all have different tastes