Wow! I don't do that well with plants either, they end up dying too, unless I either plant what he says will work, or plant the old tried and true. And funny you should ask, because in the past, I would let him go out and do the yard work alone, but recently I have asked him each time if I can help him, and sometimes he will let me help, or he will suggest things I can do, or a couple of times he said I could come and watch him, and he would occasionally look up and ask my opinion about something. We all planted azaleas one year, and only one has survived, and it was his, so, he is the true gardener in the family. And I have gotten to where I always admire his work. He also set up a bird and squirrel feeding area, and I always tell him how much I love to sit and watch them eat and chase each other around. So, he is doing more stuff finally around here, and I guess if that takes the place of a walk, I guess maybe it will do, and maybe one day I can talk him into a walk in the woods. Maybe I'll try it this Sunday. My sister just gave me two plants, and then called to ask how they were. I told her I did water them, and so far they live! It's hard to know what he would like to do with me, other than that, so I guess I just have to come up with something.
I think that's great that your H takes time out of each day to give you a call, I would love for my H to do that occasionally just to say hi, like he once did. It sounds like he wants to always keep those lines of communication open between you two, which is a great positive sign.
Well, good luck tomorrow, and I hope yall have lots of fun, and make great memories