Nasturtium

Growing Guide

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Where to plant

Full sun/semi shade

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Sow depth

5mm

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Space between seeds / seedlings

10-25cm

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Row space

10-25cm

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Size of pot needed (width / depth)

30-50cm2

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Seedling Sow Depth

1cm

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Best practice

Directly sown

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Germination (days)

10-14

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Maturity (days)

75

How to Grow

How to grow video guide
In a pot

These grow like weeds so can be great for pots

Ready to harvest

Flowers are open - pick flowers and leaves for salads

Collect seed

When nasturtiums self-sow, they simply drop their seeds on the ground.

You will find them there, all around the base of the plants.

Some are green (fresh), some are brown (dried).

Just collect them all.

If you are impatient you can remove the green ones from the plant as long as they are at a good size and fall off easily.

Small, immature seeds are unlikely to germinate.

For nasturtiums, the bigger the seed, the better the germination rate.

Take them inside and leave them on a paper towel to dry before storing.

As they dry, they'll get smaller and browner.

Make sure they are completely dry before storing or you risk mold.

This could take several weeks.

When dry, remove and discard any blighted, small, or really moldy ones.

Place the seeds in an airtight container and store them in the crisper section of the fridge.

The'll remain viable for several years this way, and sometimes even up to a decade.

When to Grow

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Zone 1 - Cool

January , February , March , April , May , June , July , August , September , October , November , December

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Zone 2 - Temperate

January , February , March , April , May , June , July , August , September , October , November , December

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Zone 3 - Subtropical

January , February , March , April , May , June , July , August , September , October , November , December

Companion Planting

Tips for Care

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Nasturtium requires minimal nutrients, sun or water and so is brilliant for diverting pests while keeping your fruit tree strong.

It has also been known to repel codling moth, a particular scrounge of apples.
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The strong, pepper-like oils within the leaves of nasturtiums may actually help to repel certain insect pests from your garden including some species of moths, beetles, flies, as well as squash bugs.

Pests & Problems


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