Below is the summary of the growth and drop averages for Tier 2.
REMEMBER: These are only averages and your experience in the game may
be different.
The "Growth Rate" is the percentage you
can expect to grow when you are planting seeds and breaking the blocks
you harvest. So with BLACK BRICK, the growth rate is 1.28 or 28%. This means
that if you plant 10 seeds, harvest the trees, and break all those
blocks, you will most likely end up with about 12.8 seeds.
The "Gem Yield" is about how many gems you can expect to get when you plant a seed and break all the blocks from that tree.