How To Grow Crops In Caves In Rimworld

Growing crops inside a cave base in Rimworld is easier than you might think. If you’re playing with a cave base setup for added security, you don’t need to venture outside to maintain your food supply. This guide will walk you through the simple process of establishing an indoor farm within your cave base.

Why Grow Crops Inside Your Cave?

Living in a cave base offers superior security compared to surface bases. Rather than maintaining crops outside and exposing your colonists to danger, you can grow everything you need safely within your cave. You may already have crops growing outside, but establishing an indoor farm provides an additional layer of convenience and protection.

What You Don’t Need

One of the best things about cave farming is its simplicity. You don’t need flooring or any complex infrastructure to get started. Additionally, while hydroponics basins can be beneficial, they are not strictly necessary. Many players successfully grow crops in caves using just the basic essentials.

The Essential Tool: Sun Lamps

The one critical requirement for growing crops inside a cave is a sun lamp. Since caves lack natural sunlight, sun lamps provide the light energy your crops need to grow. Keep in mind that sun lamps are power-hungry equipment—each sun lamp requires 2900 volts of electricity to operate. This is a substantial power demand, so plan your electrical infrastructure accordingly.

Creating a Growing Zone

Once you have your sun lamp installed, the next step is to create a growing zone. Simply click the button on your sun lamp, and it will automatically generate a green growing zone that perfectly matches the lamp’s light radius. Your colonists can then begin growing crops directly on the soil inside the cave without needing to work outdoors.

Optional: Hydroponics for Faster Growth

While not required, hydroponics basins can accelerate your crop growth significantly. If you have the resources and space, setting up hydroponics within your cave farm—as shown in this example—can speed up the growing process and maximize your yield.

Summary

Growing crops in caves in Rimworld is straightforward: install a sun lamp, create a matching growing zone, and let your colonists handle the rest. You don’t need flooring, hydroponics, or any complex setup—just reliable power and a sun lamp. This approach keeps your food production safe inside your base while maintaining the security benefits of cave living.

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