So here is the issue if you use a Binnie tree sapling in the Plant sower from Industrial Foregoing and it plants them side by side and they grow the server will crash.

Crash Log

Time: 3/11/20 12:59 AM
Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
at forestry.arboriculture.genetics.TreeGrowthHelper.hasSufficientSaplingsAroundSapling(TreeGrowthHelper.java:65)
at forestry.arboriculture.genetics.TreeGrowthHelper.canGrow(TreeGrowthHelper.java:20)
at forestry.arboriculture.genetics.Tree.canGrow(Tree.java:167)
at binnie.extratrees.gen.BinnieWorldGenTree.canGrow(BinnieWorldGenTree.java:62)
at binnie.extratrees.gen.BinnieWorldGenTree.generate(BinnieWorldGenTree.java:115)
at forestry.arboriculture.tiles.TileSapling.tryGrow(TileSapling.java:99)
at forestry.arboriculture.tiles.TileSapling.onBlockTick(TileSapling.java:50)
at forestry.arboriculture.blocks.BlockTreeContainer.func_180650_b(BlockTreeContainer.java:44)
at net.minecraft.block.Block.func_180645_a(Block.java:508)
at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:476)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:225)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:756)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Server thread
Stacktrace:
at forestry.arboriculture.genetics.TreeGrowthHelper.hasSufficientSaplingsAroundSapling(TreeGrowthHelper.java:65)
at forestry.arboriculture.genetics.TreeGrowthHelper.canGrow(TreeGrowthHelper.java:20)
at forestry.arboriculture.genetics.Tree.canGrow(Tree.java:167)
at binnie.extratrees.gen.BinnieWorldGenTree.canGrow(BinnieWorldGenTree.java:62)
at binnie.extratrees.gen.BinnieWorldGenTree.generate(BinnieWorldGenTree.java:115)
at forestry.arboriculture.tiles.TileSapling.tryGrow(TileSapling.java:99)
at forestry.arboriculture.tiles.TileSapling.onBlockTick(TileSapling.java:50)
at forestry.arboriculture.blocks.BlockTreeContainer.func_180650_b(BlockTreeContainer.java:44)
at net.minecraft.block.Block.func_180645_a(Block.java:508)
at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:476)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:225)

If you need the full log let me know