Q&A for How to Grow Watercress

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How long does Watercress take to produce seed?

Lauren Kurtz
Professional Gardener
Lauren Kurtz is a Naturalist and Horticultural Specialist. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014.

Lauren Kurtz

Professional Gardener

Expert Answer

Watercress will flower in the summer when it's hot. They will make seeds if you let them mature at the end of summer or early fall.

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Question

Will rabbits and deer eat my crop?

Lauren Kurtz
Professional Gardener
Lauren Kurtz is a Naturalist and Horticultural Specialist. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014.

Lauren Kurtz

Professional Gardener

Expert Answer

Yes, rabbits and deer might enjoy eating your watercress. If you're worried about the animals eating your plants, fence in your planting area.

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Question

I bought a 5-inch pot from a supermarket. How can I transfer it to a bigger pot because there is no space between stems?

Community Answer

You do not need to transfer unless it is almost fully grown. Also be aware that supermarket plants are often meant to be eaten, not continuously grown and are hyped up on fertilizers, so you'll need to ensure that the new potting soil has plenty of fertilizer. Tip upside down gently, letting the plant drop head first into the palm of your hand, then gently tip into the new, larger container.

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Question

After harvesting, will it continue to grow?

Community Answer

Yes, your watercress will regrow in no time. Just make sure you avoid taking more than a third of any plant when cutting in order to allow the plants enough foliage to continue growing. Also, periodic harvesting helps encourage new growth.

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Question

Should I water it every day?

Community Answer

If you use a container and cotton wool, you shouldn't need to as the cress will get the water from the water the wool already soaked up.

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Can I put my watercress plant in my fishpond?

Poul Børge Pedersen

Community Answer

Yes, but you risk getting then eaten by the fish, tadpoles, crayfish, and by a lot of insects.

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Question

What are the white stringy roots growing out of my watercress?

Community Answer

Those are new roots to allow that stem to grow as a new plant if they ever touch the soil.

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