You can download them via our resource category for Bundles and Brushes, I posted a step-by-step guide to find the download of her:
DEK (Devin Elle Kurtz) - Foliage & Grass Brushset for Krita by lobabrancrats
Because you’ll never find them on her blog nowadays since the design of her blog changed some time ago, and the link is no longer accessible from it.
Michelist
Add/Edit: In this posting, I listed some more foliage resources for Krita, but there are far more:
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