10 Best Indoor Plant Foods UK 2024 | Miracle-Gro, Gro-Sure and More

If there's one name that stands out above all others, it's Miracle-Gro - the number one selling plant food in the UK. This 2 kg tub of water-soluble powder is an absolute bargain, as a single spoon will provide a litre's worth of nutrition.

This all-purpose food will give your plants luscious, healthy leaves and help keep them free from disease. If you're looking to grow extra-large leafy plants and flowers, you should definitely try this out!

If you enjoy having a house full of plants but aren't a fan of the upkeep, these all-purpose pellets from Miracle-Gro are perfect. One application at the start of spring is all you need for a whole six months.

Whether you're a fan of ferns or flowers, succulents or snake plants, this option will happily cover all sorts of indoor plants thanks to its balanced NPK. The packaging also happens to be made entirely of recycled materials!

When it comes to foods specific for houseplants, this liquid concentrate from Baby Bio is one of the best around at promoting healthy green leaves, thanks to its high nitrogen content. That means it's perfect for rubber, spider, and snake plants alike.

While the volume may seem small, you only need a few drops in half a litre of water, meaning that it's surprisingly long-lasting. It's also one of the cheapest at face value, making it a good choice if you only have a few houseplants.

Marphyl's Marine Phytoplankton is much more than your average plant food as it contains microalgae which are full of nutrients, vitamins, and minerals. These are harvested completely naturally and are vegan, non-toxic, non-GMO and sustainably made with no preservatives.

Organic plant foods don't have an NPK rating but are much safer than other alternatives for pets, small children, and bees. In the absence of NPK, you can check the pH rating, which is slightly acidic (between 6.2 and 6.5), making it good for heathers and ferns.

This 2 kg tub of slow-release plant food from Gro-Sure may be the best value for money on this entire list - it's no exaggeration that this will feed several plants for years and years. It's a great option if you have plenty of hanging baskets around the home that are difficult to water.

It's incredibly easy to use by mixing it with soil or simply sprinkling it around larger, already potted plants. The high potassium ratio also makes it especially good for flowers and any indoor fruit plants like tiny orange trees!

Another natural option is the Performance Organics All Purpose Liquid Plant Food from Miracle-Gro, which is bee, pet, and child friendly. As it's plant-based, it's suitable for vegans, and you certainly get plenty of bang for your buck as it goes a long way.

While it is suitable for indoor plants, it's best suited to fruits and veg, so if you have small fruit trees and the like, this is perfect. However, the smell is rather strong, so you may have to open a window after you're done!

If you're a flower enthusiast looking to grow the biggest, brightest, and most beautiful, Richard Jackson's Premium Plant food will be your best friend. Flower Power fed plants have won over 80 Gold Medals and first prizes at tons of major flower shows including the prestigious Chelsea Flower Show.

As a premium plant food, this is a more expensive option and arguably better used on outdoor flower beds rather than indoors, but its quality is undoubted. The large 1.5 kg tub will also go a long way if you're worried about cost.

This liquid concentrate from Miracle-Gro is an excellent option if you have plenty of greenery both indoors and outdoors. It often doesn't make sense to buy separately for different types of plants, and this is a very balanced option.

The liquid is pretty convenient to mix into a watering can, but the powder is very similar and represents better value if you're looking to cover a lot of plants both inside and out. However, if you're after a no-nonsense option for everything, then this is your best bet.

If you're looking for convenience, there aren't many better options than Miracle-Gro's Pump & Feed. You simply apply the feed directly to the soil with a single pump and then water afterwards - easy as that! 

While it is undoubtedly quick and easy to use, it works out to be quite expensive for what you get as, as at only 200 ml, it will run out almost as quick as you use it. Still, just like many products, paying for convenience can be well worth the time saved.

The Phostrophen All Purpose Plant Food is a solid budget option that promotes a healthy root system thanks to its high ratio of phosphate. This is important in warding off disease and other ailments.

When it comes to many popular indoor plants, however, phosphate is probably the least important ingredient in plant food. However, if you've noticed your plants show signs of drought and sickness, this is well worth picking up for the price.