Looking after containers
CONTAINERS and grow bags have a lot of plants in a small area of compost and it doesn’t take long for the nutrients to be depleted.
Even though container compost is designed to feed plants for several months, they will need a nutritional top-up after the first few weeks.
You can slip a plug of slow-release granules such as Osmocote into the compost at planting or add a liquid tomato food to your watering ritual once week to keep plants strong.
Use high potassium feed for containers