Upgrade calculator

Herb Storage

Each row is one upgrade: level N → N+1. Totals sum wood, grain, and herbs for steps we have in the guide. Level pickers run through 30; if your target is above the last level with data (currently 15), totals only cover upgrades through that level.

Lumber Depot Scout Squad

Current level

Target level

My Sanctuary level (optional)

Highlights steps where Sanctuary must be higher (1–30). Other prerequisites are listed per step.

*data can be incorrect too, please verify it before using

Totals for levels 1 → 2

Wood

148

Grain

148

Herbs

Steps

Data compiled for Last Asylum Guide · Maintainer: Slaughter Queen · Game balance may change with patches.

About Herb Storage

Priority: Medium-Low

Herb Storage holds your herb reserves. Since herbs are used in healing and are naturally slower to accumulate, maximising your storage cap ensures you never waste Herb Garden output.

Upgrade Tips

1Herbs are the hardest resource to gather on the world map — maximise storage so none goes to waste.
2Upgrade Herb Storage before major war events to bank enough herbs for mass healing.
3Keep Herb Storage level matched to your Herb Garden level.