Old Tomato compost

I am in the process of emptying the hanging baskets I had Tomatoes in. In the past I have put the old compost on my veg plot as the peat content improves the veg patch soil structure I think.
This year I ventured into growing Potatoes with varying degrees of success! However those spuds which didn’t get attacked by 1 thing or another were very tasty so going to repeat the process next year.
Something in the back of my mind is telling me that the Potato and Tomato are related other than ending in O. Am I best therefore to not put the old compost on an area where I will be growing Potatoes next season or have I gone completely bonkers?

 

Hi @JWK, They got a bit of mildew towards the end of the season but don’t think there was any blight. All my Tomatoes were grown in my greenhouse. My spuds on the other hand got a good going doze of blight in July along with many farmers around here due to it hardly ever stopping raining and very muggy.
Glad I haven’t gone completely doodleally .....yet.
Just in case you didn’t read/see when I posted about your Lobelia below is the chunk of Lobelia you kindly sent me. It is still in a pot but will chance planting it out next Spring. Do you need a bit back or was your seed sowing successful?