Plants and crops
Grey Potted Plant 01
Furniture can make your place look pretty but it usually has little defensive value.
Crafting
Craft at Backpack · makes 1
Crafted as 
Potted Plant: pick this one of its variants when you place it.
Plant Fibers× 4
Clay Soil× 8
Drops when destroyed
- Clay Soil× 6
When it collapses
- Clay Soil× 6
Where to find (4 POIs)
Navezgane General Hospital (tier 5), Hybrid Energy (tier 4), Pipeline Gas Co (tier 4), The Road Gentleman Truck Stop (tier 3).
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.