How do Snowdrops survive the deep frosts and snow? Unlike plants like Nasturtiums, whose cell structure completely breaks down in very cold conditions, Snowdrops, like many plants that survive or thrive in winter, have anti-freeze proteins in their cells. Yesterday, these Snowdrops ‘collapsed, laying down, covered with frost-crystals. Today, in milder conditions, they are back standing upright and glorious, thanks to their anti-freeze. Conditions: milder day with some sunny intervals. Temperature: Max 5, Min -3c.