ΔE 15.9, loose: different enough that you should pick on purpose. Green Ochre is more saturated, warmer than Thicket Grove.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Green Ochre is more saturated, warmer than Thicket Grove.
The same difference applies the other way round: Thicket Grove is more muted, cooler.
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 Green Ochre on the colour wheel
All matches: Thicket Grove equivalents · Green Ochre equivalents