These trees were given to me as a birthday present 7 years ago. One has leaves but never blooms. The other blooms and has given fruit the last 3 years but the plums are really tiny and quite bitter. Any suggestions on how to improve them?
I bought this 2 yrs. ago at a garden center in a small pot on clearance w/ no I.D. tag. None of my gardening neighbor's can identify it, it is now 10x 's larger than when I got it. It doesn't seem to flower but does have some kind of spike come up the center in mid-summer and it has varigated leaves of yellow, green, and white.