Crowding Plants Too Closely
While thyme can spread, giving each plant space—about 8–12 inches apart—prevents competition for water and air circulation. I remember cramming seedlings into a tight grid, then spending hours battling mildew on crammed foliage. Proper spacing lets breezes sweep through, reducing fungal risks.
Roomy planting also provides nesting sites for solitary bees, which prefer bare soil near their forage plants. By keeping thyme clusters gently apart, you foster a healthy ecosystem instead of a humid breeding ground for disease.