grow · Grow

How to Start a Container Garden

Container gardening starts with choosing the right pots, good drainage, and quality potting soil. Pick containers at least 6-8 inches deep for herbs, 12+ inches for vegetables. Fill with potting mix, plant your seeds or seedlings, and place where they'll get 6-8 hours of sunlight daily. Water when the top inch of soil feels dry.

Ingredients

Step by step

  1. Choose your containers. Pick pots with drainage holes in the bottom. Plastic, ceramic, or fabric pots all work. Herbs need 6-8 inches deep, leafy greens need 8-10 inches, tomatoes and peppers need 18+ inches. Width matters more than you think — give plants room to spread.
  2. Set up proper drainage. Cover drainage holes with coffee filters or mesh to prevent soil from washing out. Add a 1-2 inch layer of gravel or broken pottery at the bottom of large containers. Skip this step for containers under 12 inches — just make sure water can escape.
  3. Fill with potting soil. Use bagged potting mix, not garden soil. Garden soil is too heavy and doesn't drain well in containers. Fill to about 2 inches below the rim. Press down gently but don't pack it tight — roots need air pockets.
  4. Plant your seeds or seedlings. Follow spacing on seed packets — overcrowding kills more container gardens than anything else. Plant seeds at the depth listed on the package. For seedlings, plant at the same depth they were in their nursery pots.
  5. Find the right spot. Most vegetables and herbs need 6-8 hours of direct sunlight. South-facing spots work best. If you only have shade, stick to lettuce, spinach, and herbs like parsley. You can move containers to follow the sun throughout the day.
  6. Water correctly. Stick your finger into the soil up to the first knuckle. If it's dry, water until you see it draining from the bottom holes. In summer heat, this might be daily. In cooler weather, every 2-3 days. Water the soil, not the leaves.

Tips & troubleshooting

Variations

Questions

Can I reuse potting soil from last year?
Yes, but refresh it first. Remove old roots and dead plant material, then mix in about 30% fresh potting soil. Add a slow-release fertilizer since nutrients get depleted over time.
How often should I fertilize container plants?
Container plants need more frequent feeding than ground plants. Use liquid fertilizer every 2-3 weeks during growing season, or mix slow-release granules into the soil at planting time.
Why do my container plants wilt even when the soil is moist?
Either the roots are waterlogged from poor drainage, or the plant has outgrown its container. Check for drainage holes and consider whether it's time to move to a larger pot.
What's the biggest mistake beginners make?
Choosing containers that are too small. Plants get root-bound quickly in tiny pots, then stop producing. When in doubt, go bigger.
Can I grow vegetables in partial shade?
Leafy greens like lettuce, spinach, and kale actually prefer some afternoon shade in hot climates. Most herbs tolerate partial shade too. Fruiting plants like tomatoes and peppers need full sun to produce well.

Further reading