Apple tree pollinators
Hello, I'm new to this forum. I'm planning to plant three apple trees this spring - and have never planted a tree before in my life! I have already ordered a Golden Russet, and my other choices at the moment are Chestnut Crab and James Grieve. I know that the crab is a good pollinator - but I'm confused by the flowering categories. The russet is flowering group 2, and the grieve is flowering group 3. All I can find out about the crab is that it flowers early to mid may.
Can anyone let me know if these three trees are a good match?