Container size and root depth
Match pot volume and depth to each crop so roots, water, and yields stay healthy.
10 min · beginner
You will learn
- Pick container depth by crop root needs
- Size volume to even out watering
- Avoid overcrowding in small spaces
Depth is the hard limit
Roots cannot negotiate. Lettuce manages with 6 to 8 inches of soil, bush beans want 8 to 10, and a full-size tomato needs 12 or more. When a container is too shallow, plants stall no matter how well you feed them. Farmur checks this for you when you add a planting.
Volume buffers water
Small pots swing between soaked and bone dry within a day in summer heat. A 5-gallon container holds moisture far more evenly than a 1-gallon one. If you water more than once a day to keep up, the pot is too small.
One thriving plant beats three cramped ones
Overcrowding shows up as small leaves, slow growth, and disease that spreads leaf to leaf. Follow spacing guidance even in containers: a single tomato per 5-gallon bucket outproduces two every time.
Drainage is non-negotiable
Every container needs holes and something to keep them clear. Standing water suffocates roots within days. Raise pots slightly off solid surfaces so water can actually leave.