Learn why, when, where, and how to mulch for winter. Planting too late. A crucial aspect of winter gardening is getting the timing of your planting spot on. Discover common winter gardening mistakes from the experts at hgtv, like pruning shrubs, planting too late or not mulching beds. In this article, we’ll dive into the five most frequent winter gardening mistakes and provide practical advice on how to avoid them. · in this guide, i’ll break down the seven most common winter garden mistakes i see as a designer—and show you exactly how to course-correct with smart timing, simple tools, and layout tweaks. · discover the five biggest winter prep mistakes gardeners regret—plus how to avoid them with tips that keep your plants, tools, and sanity safe until spring. · experts reveal important winter gardening mistakes to steer clear of to avoid harming your plants and lawn, including pruning errors. · fall is a transitional season in the garden , and not mulching for winter is a common mistake.