ΔE 9.0, close: similar, with a visible difference side by side. Poison Green is a little darker than Thicket Grove.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Poison Green is a little darker than Thicket Grove.
The same difference applies the other way round: Thicket Grove is a little lighter.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Thicket Grove on the colour wheel See Poison Green on the colour wheel
All matches: Thicket Grove equivalents · Poison Green equivalents