A pot that stays wet, a saucer full of rainwater and runoff on a balcony need different checks. Use this worksheet to inspect the setup in a repeatable order. Plant symptoms are clues, not a diagnosis.
First, identify the system
This checklist is for ordinary draining pots. In double potting, inspect the growing pot and the decorative outer vessel separately. A true self-watering planter uses a designed reservoir; follow its filling and overflow instructions. Aquatic plant containers need a different approach.
1. Inspect before changing anything
- Identify the growing pot. Check its drainage openings, not only the decorative outer pot.
- Inspect the outlets for debris, a liner, or roots. Do not pull roots through a hole.
- Check that the base or support leaves the outlets open and the pot stable.
- Empty collected water from the saucer or outer pot after drainage and rain.
- Check moisture below the surface before watering; use the plant's needs and site conditions.
- Look for compacted mix or crowded roots if drainage repeatedly behaves unusually.
Observe the setup during a normal watering when the plant needs water. Do not keep adding water solely to test a pot that is already wet. Record what happens and check again after rain or the next appropriate watering.
2. Match the observation to an inspection
| Observation | Check next | Next step |
|---|---|---|
| Water sits on top or bypasses the mix | Dry, compacted or hard-to-wet mix | Water gently in stages. Inspect the mix if the pattern persists. |
| Drainage repeatedly seems slow | Outlet, base clearance, mix and roots | Clear accessible debris; assess mix or root crowding before repotting. |
| Pot drains into standing water | Saucer or decorative outer pot | Empty the collected water and keep the growing pot above it. |
| Leaves yellow or wilt while mix is wet | Moisture, drainage, roots and plant needs | Do not assume the symptom proves poor drainage or a need for more water. |
| Runoff reaches a neighbor or walkway | Watering pace, catch tray and building rules | Capture short-term overflow in a removable tray; empty it safely. |
3. Avoid the gravel shortcut
A layer of gravel beneath finer potting mix can leave water held in the mix above it. An open exit path and suitable container mix are more useful checks. Do not treat every wet pot as a reason to move the plant into a larger container.
Go deeper on the part that failed
- Check a patio pot before planting.
- Keep saucers from holding rainwater.
- Improve container drainage without rocks.
- Elevate a planter without damaging the surface.
Sources and further reading
- Container Drainage Options - Illinois Extension
- Fertilizing and watering container plants - University of Minnesota Extension