Sustainable Gardening

Sustainable Gardening

At Capital Gardens we stock a wide range of products for sustainable gardening. We aim to stock the largest selection of Organic and Sustainable gardening products in or around London, and our selection is growing all the time.

At Capital Gardens we are environmentalists, but we are also pragmatists. We believe in striving for using organic products in our gardens wherever possible, but understand that living as we do in an urban environment, balances of nature can get skewed. So to keep our plants safe and beautiful, we may need to step in from time to time with man-made products.  However, the good news is there are many products available that are naturally derived, chemical-free or biodegradable, that have a reduced impact on the environment compared to others.  We have collected these less harmful products together to form our sustainable gardening range.

As part of our commitment to sustainability, we also produce regular blog posts on organic and sustainable topics. Our aim is to provide helpful, relevant advice and inspiration for implementing organic and sustainable practices in your garden. Whether beginner or expert, we hope that you will find it a useful ongoing resource. Come and visit one of our stores to find the full range of sustainable and organic gardening products we offer.


Featured Products

  • Superfast Weedkiller RTU 3lt

    Superfast Weedkiller RTU 3lt

    An environmentally friendly and effective method of controlling weeds in your garden. Fantastic against tough and perennial weeds.

    • Active ingredient content 186.7 g/l pelargonic acid, 30 g/l maleic hydrazide
    • Visible results within 1 day after treatment
    • Complete herbicide for both weeds and grasses
    • Works against problematic weeds such as goutweed, field horsetail, mosses and algae
    • Effective at low temperatures
    • Biodegradable
    • Suitable for use in gardens and on allotments


    • Mix 1 part to 5 parts water, i.e.100 ml mixed with 500 ml of water, for an area of 6 m² weeds
    • 1 litre is sufficient for up to 180 m² (individual plant treatment)
    • Drench the weeds thoroughly to guarantee an optimum absorption of the active ingredients


  • Rootgrow RHS 360g

    Rootgrow RHS 360g

    This larger bag is by far the most popular size available. A years supply for the average gardener. One pouch will treat up to a 100Litre container or 19x2L pots. But as this product can be used on practically anything you want to plant, you may well need more than one bag for the year. Especially if you are planting an entire bed or border. It is well worth investing in Rootgrow as the benefits are incredible and really help establish new plants.

    Rootgrow  contains mycorrhizal fungi which naturally increase nutrient and water uptake by forming a highly efficient secondary root system.

    Comes with a handy 10ml scoop.

    Size: 360g

  • Rootgrow RHS 150g

    Rootgrow RHS 150g

    Rootgrow is a fantastic product for when planting new plants. An economical mid range pack size. One pouch will treat up to 8×2 Litre pots or a 50L pot. Simply remove your plants from their pots and dust the root ball evenly, then plant into desired location or pot and firm in sufficiently to remove air pockets. Water plants in and let the Rootgrow perform its magic! Perfect for planting all plants and a real benefit to the development of anything newly planted

    Rootgrow contains mycorrhizal fungi which naturally increase nutrient and water uptake by forming a highly efficient secondary root system.

    Comes with a handy 10ml scoop!

    Size: 150g

  • Afterplant Rose Food 1kg

    Afterplant Rose Food 1kg

    Empathy Afterplant Rose Food is the first product in the Empathy range to include both mycorrhizal fungi and beneficial bacteria. This combination offers a lifetime of benefits to the treated plant. The bacteria in the product are nitrogen fixing bacteria that can increase nitrogen flow into the plant. These species also produce natural plant growth promoting hormones, such as auxins that naturally encourage healthy plant growth. Roses are known to be hungry plants and they really benefit from being fed in the spring and during the flowering period

    The product is a dry granule formulation and is ideal as an early season treatment at the first signs of growth, following first flush and throughout the growing season.

    Apply 1-2 handfuls per rose bush, apply evenly around the base, working gently into the soil and water well.

  • Afterplant Evergreen Food 1kg

    Afterplant Evergreen Food 1kg

    The Empathy After Plant range not only provides essential nutrients to your plants but also conditions the soil and enriches soil biology. This offers long lasting growth benefits in the most natural way possible and is viable substitute to pure chemical NPK fertilisers. The range is endorsed by The RHS and supports the RHS mission to ‘Sharing the best in Gardening’

    • Contains root grow mycorrhizal fungi
    • Improved plant establishment and survival
    • Feeds the soil and the plant
    • good for all Evergreens especially buxus, bay and conifers
    • Alternative to chemical or synthetic fertiliser

    This product is available at the following Garden centres:
    • Alexandra Palace Garden centre
    • Neals Nursery Garden centre
    • Woods of Berkhamsted Garden centre

  • Maxicrop Organic Seaweed Meal 2 Kg

    Maxicrop's Organic Seaweed Meal is an organic, natural soil conditioner that will encourage strong healthy growth all round the garden. Seaweed Meal encourages beneficial soil microbes and makes valuable humus. It is also rich in minerals and trace elements. Seawed Meal is an ideal spring lawn dressing and also an excellent compost activator. Approved for Organic growing by the Soil Association.

  • Maxicrop Organic Lawn 1L

    The Maxicrop Organic Lawn provides a plant growth stimulant that is made from pure seaweed extract. Seaweed contains vital plant growth stimulants, and this Organic Lawn is easy to use as it is in liquid form. The seed emergence will improve, as well as the root establishment and builds resistance to pests and disease.

    The seaweed will stimulate the beneficial soil microbes which will then result in an improved root system. With an improved root system your lawn will be able to take up more soil nutrients and water. In turn this will help to keep the grass greener, with more chlorophyll, that will improve the use of sunlight energy for carbohydrate production.

    The balance of natural fertiliser will result in a better and healthier growth from your lawn.




    This product is available at the following Garden Centres:

    • Alexandra Palace Garden Centre
    • Neals Nursery Garden Centre
    • Woods of Berkhamstead Garden Centre
  • Maxicrop Natural Fertiliser for Organic Growing 1L

    The Maxicrop Natural Fertiliser that is suitable for use as foliar feed or applied to the roots or soil as a drench. A liquid fertiliser that is 5:2:5 NPK with added seaweed and plant extracts, it is designed to be the perfect supplement for plant nutrition during the growing season. It can be safely used on a wide range of crops and plant types.

    Approved by the Soil Association for use in organic production systems, the Maxicrop Natural Fertiliser will promote rich and healthy growth, boosting the activity of naturally occurring microbes.




    This product is available at the following Garden Centres:

    • Alexandra Palace Garden Centre
    • Neals Nursery Garden Centre
    • Woods of Berkhamstead Garden Centre
  • Maxicrop Organic Tomato 1L

    The Maxicrop Organic Tomato Fertiliser is a potassium enriched extract that will provide the benefits of bio-stimulant alongside the perfect mix of nutrients for a productive and healthy growth.

    It is specifically formulated to improve the size, shape and flavour of your tomato crops. A versatile formula that can be used across a range of horticultural crops.

    Made from plant extracts and seaweed, that helps to stimulates beneficial soil microbes which then results in an improved root system, allowing your plants to absorb more nutrients and water. The seaweed will also help to make leaves greener with more chlorophyll that improves the use of sunlight energy for carbohydrate production. With this balance, the natural fertiliser from the plant extracts will make your tomatoes healthy and scrumptious, as well as providing a high yielding!




    This product is available at the following Garden Centres:

    • Alexandra Palace Garden Centre
    • Neals Nursery Garden Centre
    • Woods of Berkhamstead Garden Centre

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