How to Grow the Battery Bulb
To grow the Battery Bulb, unlock the Ultimate seed using a lit Electric hook plant, mix the seed with blue 0 + red 1, and plant it in watered pot C. First, grow an Electric area plant in pot D to open the climate room.
How the Past, Present and Light Plates Connect
Xenobotany takes place during 5-4 Overgrown. The Goop Gun explorer begins in Rockbury's past, while the Hook Gun explorer begins in the Present. Planting a seed in a past-era pot produces the corresponding grown plant in the Present.
The pots are labeled A–E, and only pot C contains water. Pressure plates in the past provide light, so the partner inspecting the grown plant must coordinate with the explorer controlling its lighting. To trade eras, both explorers must operate the same time glass from opposite sides.
Describe the pot and nearby landmarks before preparing a seed. After planting, ask your partner to check the resulting growth in the Present before changing another setting. This helps you distinguish a recipe problem from a plant that still needs the correct conditions.
Complete Plant Recipes, Conditions and Results
Match the seed type as well as its fertilizer colors. Read each recipe together with its water, light and pot requirements; producing visible growth does not necessarily mean you have grown the specimen needed for the next obstacle.
| Plant | Details |
|---|---|
| Bush | Green 3 + red 1. Works with or without water, but requires light. Suitable pots: A, B, C and E. It has no practical effect for completing the greenhouse route. |
| Electric area | Orange 4 + purple 2. Requires no water and works with or without light. Suitable pots: A, B, D and E. Produces energy; planting it in D opens the climate-room doors. |
| Electric hook | Blue 0 + purple 2. Requires no water and needs light. Suitable pots: A, B and E. Produces a battery that the Hook Gun explorer can connect to other equipment. |
| Ladder | Green 3 + orange 4. Works with or without water, but requires light. Suitable pots: A, B, C and E. Grows climbing ledges that provide a route upward. |
| Ladder decoy | Blue 0 + green 3. Works with or without water and light. Suitable pots: A–E. It has no useful effect for this route, so choose Ladder when you need climbing ledges. |
| Light | Purple 2 + red 1. Works with or without water and light. Suitable pots: A–E. It has no useful effect for completing this route; the required cultivation light comes from the past-era plates. |
| Step | |
| Ultimate | Blue 0 + red 1. Requires water and works with or without light. Pot C is its only suitable pot. The grown Ultimate plant produces the Battery Bulbs needed to finish the objective. |
Reach the Time Glass and Open the Climate Room

Plant a Step seed prepared with orange 4 + red 1 in the original pot where you collected the first plant. Its growth provides short ledges in the Present.Playing this video connects to YouTube.

Climb the resulting plant in the Present to reach the window and time glass. This brings the Hook Gun explorer to the exchange point.Playing this video connects to YouTube.

Operate the time glass together from opposite eras to exchange places. The Hook Gun explorer can now help open the partner's blocked route.Playing this video connects to YouTube.

Pull down the wall in the blocked room with the Hook Gun. This gives your partner access through the room.Playing this video connects to YouTube.

Exchange places again at the time glass to return to the planting setup. Your next required plant opens access to the climate room.Playing this video connects to YouTube.
- Prepare Electric area with orange 4 + purple 2. This gives you the energy-producing plant required for the climate-room doors.
- Plant Electric area in pot D in the past. Its corresponding growth opens the climate-room doors in the Present.
Unlock the Ultimate Seed and Collect a Battery Bulb
- Exchange eras again at the time glass to set up the Electric hook planting and the Present-side Hook Gun connection.
- Prepare Electric hook with blue 0 + purple 2. This recipe produces the hook-linkable battery when its growing conditions are satisfied.
- Plant Electric hook in pot E. This places the required electrical plant where it can power the Ultimate seed container.
- Keep its light plate pressed in the past. The Electric hook needs that light to complete its growth and provide the required energy.
- Connect the grown Electric hook's energy to the Ultimate seed container using the Present-side Hook Gun. This unlocks the seed.
- Collect the unlocked Ultimate seed. You now have the seed needed to grow the Battery Bulb plant.
- Exchange eras again at the time glass to reach the past-era cultivation equipment with the Ultimate seed.
- Mix the Ultimate seed with blue 0 + red 1. This prepares the final recipe for planting in water.
- Plant the prepared Ultimate seed in pot C. Its water satisfies the condition needed to produce Battery Bulbs.
- Exchange back to the Present at the time glass. The resulting Ultimate plant is available there for collection.
- Collect a Battery Bulb from the grown Ultimate plant to complete the greenhouse's cultivation objective.
Fix Failed Plants, Wrong Pots and Missing Light
Wrong fertilizer produces a failed plant, while missing water or light leaves a plant incompletely grown. Check the seed type, fertilizer pair and growing conditions before repeating the attempt. Compare the result with the plant your partner actually needs.

For a mistaken plant, use the bin beside the cultivation equipment, then prepare the required recipe again. Watch the disposal demonstration if you need help finding it.Playing this video connects to YouTube.
For the final plant, verify pot C before changing the fertilizer: Ultimate requires water, and C is the only watered pot. For Electric hook, check the light plate after exchanging eras, because time swaps clear goop left on plates. Restore the required lighting before asking your partner to inspect the plant again.