David Austin Rose looking sad

[My Angel Pie]

Hi i bought for my hubby last month a wonderful DA rose (old fashioned tea cup varirty - can't remember exact name, but can get it if it helps?) Anyway, when i bought it it had around 10 buds yet to bloom and 3 heads just about to open, they did, but were very fragile and the slightest knock the whole head would fall off which is a shame. Since then the other buds have bloomed but the outer petals look sun scorthched and not sure if a slug can damage the petals as it looks like a bit of slug trail is apparent. Forgot to mention, it was planted against a trellis & fence, well watered, prepped hole etc. Just seems onnce the bud has fully opened they drop, is it to do with all this rain, the heads look droopy as well?? any answers gratefully recieved.

[Clanad]

All roses and especially the venerable David Austin cultivars like to be well watered but they don't like wet feet. Water should never stand at the base. If it's overly wet you might do well to dig the rose out, enlarge the hole to 6 or 8 inches more in diameter and fill that additional space with peat moss, which will help the drainage problem. Additionally, inspect the undersides of the leaves for tiny spider mites. They will look like ultra-small reddish spots, but they move! Spray the entire plant with a good soap based insecticide. Or make your own by mixing 2 tbsp cooking oil, and 2 tbsp baby shampoo in 1 gallon of warm water. Using a spray bottle drench the plants leaves top and bottom. Repeat in a week to get the ones that weren't hatched at the first attempt. It leaves a nice sheen to the leaves. Lastly, a moderate fertilizer couldn't hurt. Look for one in which the first number of the three digits is above 15. It will look like this: 15-5-10 or so. The first number in nitrogen and roses feed heavily on nitrogen.. Make sure the soil is damp before applying and don't get any on the leaves, only the soil under the drip line... Best of luck!