I recently planted a 3–4-ft. Southern crabapple tree in my back yard to pollinate a couple of other apple trees that have stopped producing (I think because they may be of the same variety). I've heard that this crabapple makes an excellent pollinator. But will the regular apple trees (not sure what kind they are) be able to pollinate the crabapple too?

I did plant another crabapple at the same time, but it's probably about 200 feet away (I live in a rural area).

Thanks for any info.