Not much. They are supposed to be much like blueberries in taste, but the bushy plants with dark blue elongated berries don't need an acidic soil for growing. Hardy in at least zone 5 and higher, probably in zone 4, but I don't really remember.
I have had mine for three years. Year one--purchased and planted in "nursery". Year two--drought with flowers but no berries. Year three (this year) -- I had a late frost that took the flowers. Hopefully, this year I will have better things to say about the fruit.
Check the climate requirements very carefully. I saw a write-up in the local paper a few years back about honeyberries. One of the top developers of new varieties has a nursery just a few miles up the road from here, a Russian lady that immigrated to the US. The reason she was located here is that the University of Arkansas is really big on berries, especially blueberries, and her husband was into breeding blueberries. A real interesting pair.
Anyway I went up to their nursery and happened to catch her and have a chat about honeyberries. That wrote-up in the newspaper made them sound like miracle berries. When I told her I was interested in them she said to not bother. Summers are too hot and dry here for them. Their nurseries for honeyberries were in Canada.
I worked in Evansville for 9 months a long time ago. Indiana might be a bit hot and dry for them too. So just check the climate requirements before you invest too much. I think they are from Siberia originally.