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Divided phlox is a popular perennial plant known for its vibrant flowers and lush foliage. Over time, these plants can become crowded, leading to reduced flowering and health. Repotting and dividing them is essential for maintaining their vigor and ensuring a beautiful garden display. Knowing when and how to do it properly can make all the difference.
Understanding When to Repot and Divide
The best time to repot or divide phlox is during its active growth period, typically in early spring or late summer. This allows the plant to recover quickly and establish itself in its new environment. Avoid dividing during the winter when the plant is dormant, as this can cause unnecessary stress and damage.
Signs Your Phlox Needs Dividing
- The plant has become overcrowded, with multiple stems emerging from a single root ball.
- Flowers are fewer and smaller than usual.
- The plant appears to be declining in health or not blooming as profusely.
- The center of the clump looks thick and woody, indicating age and overgrowth.
Tools and Materials Needed
- Garden spade or sharp knife
- Gloves
- Pruning shears
- New pots or garden beds
- Well-draining potting mix or garden soil
- Watering can or hose
Step-by-Step Guide to Dividing Phlox
Follow these steps to successfully divide and repot your phlox:
1. Prepare the Area
Choose a cloudy day or early morning to minimize stress on the plant. Water the plant thoroughly a day before dividing to soften the soil and reduce root damage.
2. Dig Up the Plant
Carefully dig around the plant, loosening the soil with a spade or garden fork. Gently lift the entire root ball out of the ground, taking care not to damage the roots.
3. Divide the Clump
Use a sharp knife or pruning shears to cut the root ball into sections. Each section should have at least one healthy shoot and a good root system. Be sure to remove any dead or damaged roots.
4. Replant the Divisions
Plant each division into a prepared pot or garden bed. Fill with well-draining soil or potting mix, ensuring the crown is level with the soil surface. Water thoroughly after planting.
Caring for Divided Phlox
After repotting, keep the soil moist but not waterlogged. Place the plant in a location with bright, indirect sunlight. Fertilize lightly during the growing season to promote healthy growth and flowering.
Additional Tips for Success
- Always use clean tools to prevent disease.
- Avoid dividing during extreme heat or cold.
- Label divisions if planting in different locations.
- Regularly check for pests and diseases.
With proper timing and technique, dividing your phlox can rejuvenate the plant and enhance your garden’s beauty. Patience and care will reward you with healthier plants and more abundant blooms each season.