I noticed our lawn service came to our house a couple weeks ago and the next day I went out to the garden to check on how my raspberry plants were doing. Well, there was a white residue on my nasturtium and my raspberry plants and I noticed the buds on the plants looked dull and the leaves on some of the plants were curling up. Last week I saw the nasturtium was dead and the raspberry plants were yellowing on the bottom of the plants and all the buds were dead. Yesterday, I see that at least a 1/3 of the leaves on the plants had fallen off. What do I do? Do you think they are salvageable? And, if these plants are dead and remove the plants should we completely start over and remove the soil and replant? *Note, this picture was from 6/20/24