Good Morning and welcome. I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
I am so sorry that Hermoine and Harry are not feeling well/...I know this is very scary for you and them...
I would strongly recommend that you take both cats back to your vet for blood work to determine what is causing this. We always worry about Feline Leukemia and FIV. This could also be an infection that would show up on the lab work. This wanting to sleep all the time is typical for cats with an infection. These signs are not typical for any poisoning they might get into from your garden.
For now, give each cat Pedialyte, 2-3 ounces every 4 hrs to keep them hydrated. Also, give each cat Nutrical, a dose every 4 hrs. This is a high calorie supplement available at the pet store that acts as an appetite stimulant and gives them the nutrients that they require to get over this. Right now, supportive care is essentail until your vet can run tests.
Does that make sense to you?
Please let me know if you have ANY other questions. My goal is to give you 100% satisfaction and if you are not yet satisfied, please Reply so I can clarify for you
Sincerely, Dr. Loretta
yes i took them back for blood tests all negative - they had a steroid injection and after 6 days not drinking or eating the first one ill started eating and a day later the other one started to eat again - with no clue as to what was wrong it is still a mystery - ty for replying