Horseradish

Growing Guide

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Where to plant

Full sun/Light Shade. Drought tolerant.

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Sow depth

5mm-1cm

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Space between seeds / seedlings

30-60cm

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Row space

30-60cm

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Size of pot needed (width / depth)

30-90cm2

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Seedling Sow Depth

2.5cm

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Best practice

Transplant

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Germination (days)

4-15

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Maturity (days)

365

How to Grow

How to grow video guide
From seed

Sow seeds 5mm-1cm deep in well cultivated, deep soil.

Seeds will sprout in 7-15 days, depending on conditions.

Thin or transplant to 20cm (8″) apart in rows 40-50cm (16-20″) apart.

From seedling

Place 15cm long root in the soil in late winter/early spring, and cover with 2.5cm of Seed raising mix and water well.

Space them out at 80cm intervals.

Once the shoots appear, reduce them in number of two to three to encourage root growth.

In a pot

Choose a pot 50cm wide & 70cm deep to encourage root growth.

Position in sunny or lightly shaded spot.

Fill pot with potting mix.

Follow seed-> seedling -> harvest guide.

Ready to harvest

When foliage dies down.

Harvest by digging up all roots carefully as the smallest piece will regrow.

For the leaves, harvest as needed, shortly after they emerge, before they become woody.

For the roots, harvest November through March.

The roots can also be lifted and stored for spring planting to keep the crop going from season to season.

When to Grow

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Zone 1 - Cool

November , December

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Zone 2 - Temperate

October , November

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Zone 3 - Subtropical

April , September , October

Companion Planting

Tips for Care

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Can be grown from seed but easier (and quicker) to grow by taking pieces of root and planting.
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Harvest horseradish annually after the first frost, and replant after the last frost.
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Horseradish is thought to repel aphids and whiteflies, blister beetles, potato beetles, and some varieties of caterpillars.

Its flowers attract beneficial predatory hoverflies.

It's a great companion plant for most crops.

Pests & Problems


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