Lesson 10: Organic mulches Quiz

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In year one, which is one of the key requirements of the mulch?

1 point

It stops moisture getting to the soil

It is heavy enough to squash and kill weeds

It excludes light

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If starting no dig on soil with few weeds and mostly annuals, is it important to lay cardboard before spreading compost?

1 point

No, although it's always an option

Only if the weather is warm

Yes

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How does cardboard on soil help as part of your initial mulch, in many but not all situations?

1 point

The decomposing cardboard speeds up weed decomposition

Cardboard prevents weeds from growing upwards in search of light, for about six to ten weeks, until it decomposes

Cardboard keeps the compost in place

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What are some benefits of using cardboard, compared to other types of mulch? Choose two answers.

1 point

It’s high in nutrients

The staples and tape help hold it together

It degrades

It’s free

It’s fine to lay thick cardboard on moist soil, then 10–15cm (4–6in) of compost on top, and then to plant in the same day (if it’s the right season for those plants).

1 point

True

False

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Before using an old carpet as mulch, why is it important to know the type of material it’s made of?

1 point

Because slugs prefer carpets made with wool

Because it has to be all wool, yet most (but not all) carpets contain plastic threads and synthetic chemicals

To have an idea how effective the carpet will be at killing weeds

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How would you deal with woody growth, such as brambles and buddleia, before mulching?

1 point

Spray with a root killer

Dig out the main stems, and just a few of the larger roots attached to them

Prune back to the base

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It is necessary to start planting in a new no dig bed straightaway.

1 point

True

False

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What time of year is best for creating new no dig beds? Choose the answer with most information.

1 point

Autumn

Spring

Winter

Any time

Summer

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Do you need to add mulch between any first and second crops?

1 point

No – unless the soil life has eaten all the mulch, which is unlikely if you applied 5cm (2in) before the season began

Yes – the extra nutrients are needed early on

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When do you need to apply the first mulch, for beds in a newly erected greenhouse or polytunnel?

1 point

Six months before erecting the structure

After erecting the greenhouse/polytunnel

Either before or after – whatever is easiest for you

Before erecting the greenhouse/polytunnel

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