How do I get rid of this in my planters?

Learn More About
Hyssopleaf Sandmat Care

• 🌟 Benefits
• 🍂 Black Spots on Leaves
• 🌞 Direct Sunlight
• 💩 Fertilizing
• 🤔 Problems
• 🧪 Propagating
• 💨 Humidity
• 💦 How Often to Water
• ✂️ Pruning
• 🪴 Repotting
• 👶 Toxicity to Humans
• 😸 Toxicity to Cats
• 🐶 Toxicity to Dogs
• 🪴 Soil
• 🤒 Root Rot
• 🌸 Flower
• 🌡️ Temperature
• 🍃 Leaves Curling
• 🍃 Leaves Drooping
• 🍃 Leaves Falling Over
• 🍂 Leaves Mushy
• 🍂 Yellow Leaves
• 🍂 Brown Spots on Leaves
• 🍃 Leaves Dropping
• 🌤️ Light Requirements
• 🐞 Bugs