White Princess Philodendron Late Blight, The Most Dangerous Potato Disease February marks the start of planting and early crop growth. As rains settle in, late blight risk increases, especially in cool, wet conditions. Watch out Planten un Blomen When to add a moss pole to a Pink Princess Philodendron? Four O'Clocks (Mirabilis jalapa) Great Plant Picks: Unbeatable Plants for the Maritime Northwest Garden