Growing vegetables and herbs on a balcony can be rewarding, but a healthy-looking plant does not always translate into a good harvest. Despite regular watering and adequate sunlight, tomatoes may yield fewer fruits than expected, herbs may struggle to grow, and vegetables may lack the flavour gardeners hoped for. The problem could lie in the conditions specific to the balcony.
Dr Mayur Mandrah, an ex-Army major who shares gardening advice on Instagram as @plantwithmayur, has highlighted three common mistakes that can affect the growth of edible plants in containers. His advice focuses on understanding what plants need below the soil as well as the conditions in which they grow.
1. Choose the right soil for your pots
Garden soil and potting mix serve different purposes. According to Mayur, using ordinary garden soil in containers can cause problems because it tends to compact over time. This reduces the air available to the roots, making it harder for plants to absorb the nutrients they need to grow.
He recommends using a good-quality potting mix with adequate drainage instead. A suitable mix helps maintain airflow around the roots while allowing excess water to drain away.
For balcony gardeners, choosing the right growing medium is an important first step towards healthier plants and a better harvest.
2. Give your plants enough room to grow
The size of a pot matters beyond how well it fits into a balcony garden. A plant may appear healthy above the soil while its roots struggle for space in a shallow container.
The gardener recommends providing tomatoes with at least 12 inches of soil depth and peppers with at least 10 inches. Even herbs such as basil can benefit from having sufficient room for their roots to develop.
Before planting, check whether the container is deep enough for the crop you intend to grow. A pot that looks attractive may not necessarily offer the space the plant needs to survive.
3. Pay attention to your balcony’s microclimate
Balconies can expose plants to conditions that are different from those in a garden bed. Wind can dry out potting mix more quickly, while walls and floors absorb heat during the day and release it later. These changing conditions can place plants under stress and affect their growth and flavour.
Mayur advises gardeners to spend time observing their balconies at different points throughout the day. Notice which areas receive direct sunlight, where the wind is strongest, and which spots become particularly hot.
Based on these observations, move pots to locations that better suit their needs. A little attention to the conditions around the plants can help gardeners make better decisions about where to place them.
Growing vegetables and herbs on a balcony can be rewarding, but a healthy-looking plant does not always translate into a good harvest. Photograph: (Ruff Day Vet + Pet Gym)
Start with these three changes
A productive balcony garden depends on more than regular watering and sunlight. The soil must support healthy roots, containers must provide enough depth, and plants need to be placed where they can cope with the surrounding conditions.
By addressing these three factors, balcony gardeners can give their edible plants a better chance of growing well and producing a more satisfying harvest.
