Make room for roots & water
Use a container with drainage holes and a potting mix intended for container plants. Dense garden soil can be difficult to manage in a pot. Choose space for the herb's expected growth rather than fitting a mature plant into the smallest available vessel.
Small pots tend to dry quickly. A larger pot may buffer moisture changes, but its filled weight also matters on a balcony. Check building rules and permitted loads before adding heavy planters; keep access routes clear.
Plant with care
- Check that the holes are open. Place the pot where water can drain without dripping onto neighbours or walkways.
- Ease the plant out without pulling its stem. Set it near its previous planting depth and settle mix gently around the root ball.
- Water the mix to settle it, allow excess water to escape, and check the plant again as it establishes.
A decorative outer pot can hide standing water. Lift the inner pot to check after watering or rain. Group plants by their care needs; start mint separately from thyme.
Reference
- RHS: growing plants in containers (container choice, planting and aftercare).