Phostrogen is a specially formulated all-purpose plant food in the form of a white, water-soluble powder. It contains nitrogen to promote healthy green foliage; potash to develop abundant flowers and fruit and make plants drought and disease resistant; phosphate to encourage a strong, healthy root system; and essential trace elements to keep plants healthy.

For convenience, it is normally applied as a solution in water. It can be used regularly throughout the growing season for all types of plants, both indoor and out. Apply plant food solution round the roots of plants as far out as the foliage reaches, using as much solution as when watering thoroughly.

How much and how often?

Container plants and young plants and seedlings: 1 level 5ml teaspoon in 10 litres of water, at every watering.

Flowers, shrubs trees, lawns, fruit and vegetables: 4 level 5ml teaspoons in 10 litres of water, every 7-14 days.

Tomatoes: 4 level 5ml teaspoons in 10 litres of water, every 7 days after first flowers have set.

House plants: 3 pinches per litre, at every watering.

Powder application, apply 70g / sq m (2oz per square yard) as a soil dressing in spring and repeat in the summer. Alternatively, to feed your garden in minutes, use a Phostrogen 'Handy Feeder', 'Easy Feeder' or 'Thru Hose Feeder'. Simply pour 250g of powder into the feeder bowl and use as directed in the feeder instructions. 

Phostrogen Growing Guides

Bayer Garden has access to a wide range of publications and advice from experts on getting the best results with your plants.  The following list of titles are all free for download from the Phostrogen website in pdf format. 

·                African Violets (Saintpaulia)

·                Apples and Pears

·                Begonias (Tuberous)

·                Cacti and Other Succulents

·                Carnations and Pinks

·                Chrysanthemums

·                Clematis

·                Cucumbers

·                Dahlias

·                Dry Power Application (Plant Food)

·                Flower Arranging

·                Fuchsias

·                Gardening in the Greenhouse

·                Growing Vegetables Without a Garden

·                Hanging Baskets

·                House Plants


·                Hydroponics (Growing Plants without Soil)

·                Lawns

·                Lawns - Spring, Summer and Autumn Care

·                Leeks (Pot and Blanch)

·                Orchids

·                Pelargoniums and Geraniums

·                Rhododendrons and Other Acid-Soil Plants

·                Roses

·                Soil-less Composts (Making Your Own)

·                Strawberries

·                Successful Gardening by Schoolchildren

·                Sweet Peas

·                Tomatoes

·                Water Lilies and Other Pond Plants

·                Weather and its Effect on Plant Feeding




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