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Green Manure Seeds
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Green Manure Seeds - Sweet Clover 'Yellow Blossom'
Sweet Clover Yellow Blossom Green Manure
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Sweet Clover 'Yellow Blossom' is an aggressive green manure that grows rapidly and has very strong roots that penetrate hard compacted soils that helps to improve drainage. It also produces lots of leafy foliage that adds good organic matter to the soil when dug in which improves soil structure. It has an open growth habit so not as good as other clovers at suppressing weeds.

Sweet Clover 'Yellow Blossom' vigorous root system is also good at drawing up minerals like phosphorous & potassium as well as nitrogen, so a good all rounder.

It is naturally biennial so can be left to overwinter when it will flower in spring of the 2nd year – these yellow flowers are sweet smelling & loved by bees/insects and can grow to 2m tall. However it can then become very aggressive and must not be allowed to set seed otherwise it will become a problem. It can be topped (cut down) once well established but leave a fairly good length of stubble.

This green manure needs particular attention so it does not overstay its welcome but it does give good results with careful handling.

It is part of the legume family and should be treated as such for crop rotation purposes.
When to Sow Sweet Clover 'Yellow Blossom'
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Cultivation Requirements
Sow Dates:
March to May & August-September. Not frost tolerant in early stages so best sown from May.
Growing Period:
Up to 2 years.
Soil Type:
Most. Does well on hard compacted soils, waterlogged soils, drought resistant & tolerates poor soil.
Nitrogen Fixer
Yes, if certain bacteria present in soil.
How to Sow:
Remove weeds especially perennials, rake the soil and broadcast seed at a rate of 1.5g per sq m. Rake in to a depth of 1-2cm, firm soil and lightly water in. Germination should take between 7-14 days.
Qualities:
Produces lots of nitrogen rich organic matter, quick growing, good at drawing up phosphorous/potassium & nitrogen and if left to flower produces sweet smelling yellow flower loved by bees & beneficial insects.
Area Covered:
25g
16m2
50g
33m2
100g
66m2
250g
165m2
Approximate area based on 1.5g per square metre.
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Which Green Manure?
The choice can seem bewildering but with the help of our guide, the options will become easier.

If it still seems like hard work try our Spring, General or Winter Mix depending on the season as these provide the ideal ingredients to suit most situations.

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