Five tips for feeding plants in pots

The amount of feed plants need varies according to growing conditions, size and speed of growth. Some people underfeed, while others overdo it. If you apply a strong dose of feed all in one go, the resulting strong solution of salts can actually draw moisture out of the plant by a process known as reverse osmosis, so over-feeding does more harm than good.

Always follow the feed supplier's advice, but as a general rule start feeding in spring, perhaps once every two weeks. Feed weekly when plants are growing vigorously and the weather is warmer, rising to twice weekly for heavy feeders or fast-growing plants in large containers.

In this No Fuss video guide, David Hurrion explains how to recognise plant nutrient deficiencies, so you know when to feed your plants:

Here, David takes you through the different types of organic plant food:

More on feeding plants:

• Feeding plants in spring
• Feeding plants in summer
• How to make comfrey feed

Check out these tips on feeding your potted plants, below.

Using liquid feeds

Use liquid feeds for plants in pots and containers; it can be too easy to overdose with solid feeds, which can scorch plant roots when applied to the surface. However, you can incorporate slow-release fertiliser into your planting medium when potting up plants.

Choose the right feed

Apply high-nitrogen liquid feeds to leafy plants and liquid tomato feed (diluted to half or quarter strength) to flowering plants, to promote buds.

Feed little and often

Feed little and often instead of big, infrequent doses during the growing season and increase feeding with speed of growth. Stop feeding at the end of summer.

Dilute your feed

Dilute liquid feeds, following the maker's directions, and apply as much of the liquid as you'd use to water the plant. Don't be tempted to add more.

Don't feed plants that are under stress

Don't feed plants that are under stress from root damage or drought (which will be wilting) until they've recovered.

Feeding those that need it

Remember, not everything growing in containers needs regular feeding. Generally speaking, cacti, succulents and hardy annuals perform best on poor soils. If you're unsure, just do a little research around the plant to find out more about its growing requirements.