Upgrade calculator

Herb Garden

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 30), totals only cover upgrades through that level.

Lumberyard Warrior Statue

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

135

Grain

135

Herbs

Steps

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

About Herb Garden

Priority: Medium

The Herb Garden produces herbs used in troop healing, antitoxin crafting, and certain research paths. Herbs are often the scarcest resource in the mid-to-late game, making the Herb Garden an underrated but critical building to upgrade.

Upgrade Tips

1Herbs are consumed heavily in the Infirmary — a strong Herb Garden means faster troop recovery after battles.
2Don't neglect the Herb Garden in favour of Farm and Lumberyard — all three need to scale together.
3Upgrade Herb Storage alongside Herb Garden so the extra production doesn't go to waste.