Boost Liquids

Give Your Plants the Natural Advantage

Crafted from 100% pure, sustainably sourced worm casts, Gro Worm Liquid Boost is a powerful organic feed and soil conditioner packed with essential nutrients — Nitrogen, Phosphates, and Potash — plus a living community of beneficial microbes and micronutrients.

It works in perfect harmony with nature to improve soil health, boost growth, and keep your plants thriving naturally.

3 products

Boost Liquid feed: common questions

What is Gro Worm Boost Liquid made from?

Our Boost Liquids are made from 100% pure, sustainably sourced worm casts. That gives you a natural organic feed carrying nitrogen, phosphates and potash alongside beneficial microbes and micronutrients, all in a form plant roots can take up quickly. It is OF&G certified organic and completely chemical-free.

How do you dilute Boost Liquid feed?

Add 2 caps (20ml) to a 4.5 litre watering can for standard feeding, then water as you normally would. For delicate plants and seedlings, halve it to 1 cap (10ml) per can. Because the feed is gentle and releases its nutrients slowly, there is very little risk of scorching even if you are slightly generous.

How often should you feed with it?

Feed every 2 to 3 weeks through the growing season, from spring to late summer, then ease off in winter when growth slows. Little and often works better than the occasional heavy dose, since the nutrients and microbes are delivered steadily rather than all at once.

Which Boost Liquid should I choose?

Plant Boost is the all-rounder for beds, borders, pots, fruit and vegetables. Tomato Boost is tuned for tomatoes and other hungry fruiting crops, and Lawn Boost is for greening up and strengthening grass. All three are made from the same pure worm casts, so whichever you pick, you are feeding the plant and improving the soil at the same time.

Can you overfeed or scorch plants with a worm cast feed?

It is very hard to. Unlike harsh synthetic feeds, a worm cast liquid releases its nutrients gently and is buffered by living microbes, so roots are not scorched when you use it as directed. Sticking to the dilution on the bottle and feeding little and often keeps plants growing steadily without any feast-and-famine swings.

What makes Gro Worm liquid feed different?

It is made from 100% pure worm casts rather than synthetic chemistry, so as well as feeding the plant it improves soil structure, water retention and the living biology in the soil. It is OF&G certified organic, chemical-free and gentle enough for anything you are growing to eat, which makes it a genuine natural feed rather than a quick chemical hit.