Sacred grove in SSF

is it worth getting or trash?

seeing as harvest is for crafting your own gear...

The problem I have with harvest is the monsters are harder to kill than the mods that are gated behind them, much of the time. That's why there's such a market for "services". You need better gear to get the better mods, and better mods to get the better gear. Great.

Playing SSF, it is worth getting.

Harvest is the best source of gear in ssf. Take a base, use any reroll from harvest until you get something good, then upgrade it incrementally.

You should have some bases in you stash just for harvest from the start of mapping.

It's absolutely worth getting in ssf but it's also my least favourite league mechanic shrug.

Yes if you will use it, research crafting methods and mod % chance and blocking, etc. Or if you need it for cluster jewels (but generally SSF builds should function without clusters of course).

If you will avoid it or just use it randomly (no research) hope you get something good through luck, probably not.

Essence crafting on bases require fewer points, and would be about as powerful and SO much faster.