The bugs will drown, and your plant won’t the mind getting dunked. If the holes are slightly too big, you can add more water to the rock wool. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/26\/Grow-Watercress-Step-1-Version-2.jpg\/v4-460px-Grow-Watercress-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/2\/26\/Grow-Watercress-Step-1-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/ad\/Grow-Watercress-Step-9-Version-2.jpg\/v4-460px-Grow-Watercress-Step-9-Version-2.jpg","bigUrl":"\/images\/thumb\/a\/ad\/Grow-Watercress-Step-9-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-9-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f6\/Grow-Watercress-Step-10-Version-2.jpg\/v4-460px-Grow-Watercress-Step-10-Version-2.jpg","bigUrl":"\/images\/thumb\/f\/f6\/Grow-Watercress-Step-10-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-10-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, Growing Watercress Outdoors in the Ground, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/6e\/Grow-Watercress-Step-11-Version-2.jpg\/v4-460px-Grow-Watercress-Step-11-Version-2.jpg","bigUrl":"\/images\/thumb\/6\/6e\/Grow-Watercress-Step-11-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-11-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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License: Creative Commons<\/a>
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License: Creative Commons<\/a>
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\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8c\/Grow-Watercress-Step-15-Version-2.jpg\/v4-460px-Grow-Watercress-Step-15-Version-2.jpg","bigUrl":"\/images\/thumb\/8\/8c\/Grow-Watercress-Step-15-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-15-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/1c\/Grow-Watercress-Step-16-Version-2.jpg\/v4-460px-Grow-Watercress-Step-16-Version-2.jpg","bigUrl":"\/images\/thumb\/1\/1c\/Grow-Watercress-Step-16-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-16-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b8\/Grow-Watercress-Step-17-Version-2.jpg\/v4-460px-Grow-Watercress-Step-17-Version-2.jpg","bigUrl":"\/images\/thumb\/b\/b8\/Grow-Watercress-Step-17-Version-2.jpg\/aid4144067-v4-728px-Grow-Watercress-Step-17-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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