A covered balcony is neither an ordinary indoor room nor an open garden. The roof can reduce direct sun while sideways rain wets pots. Railing materials, neighbouring buildings and exposed upper-floor wind can create very different conditions a short distance apart.
Map the exposure
Visit the balcony at multiple times. Mark where direct light reaches the surface, how much open sky can be seen, whether wind channels through a corner, and whether rain wets the soil even under the overhang. A sheltered corner may be useful, but do not assume a balcony labelled “east facing” receives the same light as every other east-facing space.
A repeatable balcony survey
Make a small record before arranging shelves or moving plants. Note the observation time and weather alongside each answer rather than assuming the whole balcony behaves uniformly:
| Observe | Practical question |
|---|---|
| Light at leaf height | Does direct sunlight reach this exact spot in the morning or afternoon? |
| Rain at pot height | Does water enter the container when the wind changes direction? |
| Stability | Could a gust move the pot or support, especially near the railing? |
| Runoff | Where would excess water go after watering or a storm? |
Repeat observations after a noticeably different weather day. The record is more useful than relying on the balcony's compass direction alone. You can save these notes with the placement worksheet.
Protect the setup
Choose a stable container that cannot fall from a railing. Check building rules before attaching supports, shelving or hanging plants. Avoid routing water across neighbours' property. Give plants time to adjust when moved from dim interiors into outdoor brightness.
Reassess after a weather shift
A spot that stayed dry on an ordinary day may receive wind-driven rain in a storm. Rain adds water independently of your routine, so inspect the root zone before watering. Conditions differ substantially by region and season; PAGASA's climate types offer context, not a minute-by-minute forecast for your balcony.
Use the placement worksheet and consult the field guide before committing a plant to a new position.