How, when and why to divide garden perennials for better blooming
If your spring and early-summer perennials are overgrowing their spaces, blooming less, producing smaller flowers or flopping over (possibly with a hole in their centers), they're telling you they want to be divided. Crowded plants often struggle because they must compete for limited water, nutrients and sunlight, and the diminished airflow between them also increases their risk of contracting mold and fungal diseases. To avoid their inevitable decline, it's best to divide them every three to five years. As a bonus, the practice will reward you with free plants for your garden. Not ...