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The Stems Of Some Of My Daylilies Are Hollowed Out…

Woody Asked

The stems of some of my daylilies are hollowed out and the weight of the flowers causes some to break: what causes this?

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The Gardener’s Answer

Hi, Woody: Daylilies (Hemerocallis) are an old-fashioned favorite and are basically a given in most gardens these days. Thankfully they come in a wide array of colors. As a general rule these perennials are not subject to many insect or disease problems and none of them would affect the flower stem. Not to get too technical but the stem of your daylilies consists of different layers of tissue; though the thickness of each tissue layer may differ if you look close these herbaceous stems are all hollow. The thinner/weaker stems are certainly more vulnerable to drooping caused by heavy rainfall and/or high winds. Staking is always an option if you want them to be more upright or you can use them in a cut flower arrangement for a couple of days.

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