I am also interested in knowing about this issue. Although we tried to make both of our cats strictly indoor cats, one had other ideas and made our lives miserable till we started to let him go out during the day. I know to avoid lilies, especially Easter lilies. Please accept my condolences on the loss of your beloved furbaby.

The condolences are directed to both the OP and the previous commenter.

Friends installed a pet door that allowed their indoor cats to go outside and use a room-sized wire enclosure built for them. That way they were outside but not able to roam and get into trouble - what you plant your yard with won't make any difference as soon as any of your cats leave the property. Also cats allowed to go outside without constraint are subject to other threats besides poisonous plants (probably a lower likelihood occurrence, at least in an outdoor setting), including such things as moving vehicles and hunting coyotes, as well as hazards like the aforementioned episode involving presumably Warfarin. Which is still much used by pest control companies.

My cat passed at 13 years ofage /adult years i think it was 85 yrs. So she did well. But Tobie had KIdney disease stage 4 and and infectious disease such as FIV (feline immunodeficiency virus) , basically hydration. And I only knew she was ill 3 days before i did the humane thing and put her down. I have 2 other cats born from same litter, and I know one is greving,, but she is eating and moving around as is my other, They all are Indoor /outdoor cats, and they dont stray from the yard. ( Odd, but Thankful.) **** DO NOT GIVE SALT, 1% to 3% is the most they can handle!! I reserched that myself and all this food that has added grain and vegatables,
Your CAT and Dog DONT need it, as i have been informed that when cats and dogs 1000s of
years ago sticly were meat eaters and still are. So Dont waste your Money.!! ( Odd, but Thankful.) . Embothrim thank you for you adivce ,, but I know they would go NUSTO (lol) even if the cage was massive. I am SUPER SENSITIVE to their needs, as you wold know if a cat /or dog dosmt like something you will know!!! ( scrathes ie .lol.) and mine dont like strangers. But I do get cross when Plant Nursieres have NO IDEA what is TOXIC for animals, I understand they are there to sell plants naturally, but it would help. I was at Bunnings this week and was delighted to see some plants ahd a TOXIC warning on them. I found a list from the ASPA which is our version of RSPCA. and this is a link that i hope my assist you all as I am working through it myself. This is is NOT created by me I am NO EXPERT.. i am just trying to let my pets live a happy , fulling Life, filled with uncontional love. Regardless if this list is allowed, I dearly hope that it will ASSIST YOU and YOUR FURBABIES. (Many Apolgies for raving on, Imm sorry) Thank You all and God bless you. https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants . I hope it helps, im ging through the list myself.

Their cats would simply run back into the house (from the enclosure) if bothered by something. They were also shy inside the house, would stay away from where I was when I visited.

There has been at least one thread on this site that went on and on because of some participants continuing to insist that they had every right to let their cats run around outside wherever they wanted to. Sorry but the statistically based facts are that house cats are much better off kept indoors at all times. Never mind the toll taken on wildlife by hunting domestic cats, the problems posed for other property owners by areas around house foundations, as well as sand boxes and vegetable gardens being used as litter boxes.