how to split mums

3 min read 21-01-2025

Meta Description: Learn how to easily split your mums (chrysanthemums) for more vibrant, abundant blooms! This comprehensive guide covers choosing the right time, tools, and techniques for successful mum division, ensuring your garden thrives with these beautiful flowers. Get step-by-step instructions and expert tips for multiplying your mum collection!

Understanding Mum Division

Chrysanthemums, or mums, are hardy perennials that benefit from occasional division. Dividing your mums isn't just about propagation; it rejuvenates the plants, preventing overcrowding and encouraging more robust growth and flowering. Over time, a single mum plant can become overcrowded, leading to smaller blooms and weaker stems. Splitting them solves this issue.

Why Split Mums?

More Blooms: Dividing encourages bushier growth, resulting in significantly more flowers.
Rejuvenation: It revitalizes older plants, improving their overall health and vigor.
Propagation: It's a simple and effective way to increase your mum collection.
Disease Prevention: Dividing helps prevent the spread of diseases within a clump.
Space Management: It keeps your mums from overcrowding each other and competing for resources.

When to Split Mums

The best time to divide mums is in early spring or early fall. Spring division allows the new plants ample time to establish themselves before winter. Fall division gives the plants time to settle before the next blooming season. Avoid dividing during the hottest part of summer, as this can stress the plants.

Tools and Materials You'll Need

Before you begin, gather these essential items:

Sharp shovel or spade: For cleanly dividing the root ball. A sharp tool minimizes damage.
Garden fork: Useful for loosening the soil around the mum clump.
Gloves: Protect your hands from thorns and soil.
Pruning shears: To trim any damaged or overgrown roots.
New planting holes: Prepare these beforehand for your divided mums.
Potting soil (optional): If you're planting some divisions in containers.

Step-by-Step Guide to Splitting Mums

Follow these steps for a successful mum division:

1. Prepare the Plant

Water the mum plant thoroughly a day or two before dividing. This makes it easier to lift the root ball without damaging the roots.

2. Dig Up the Mum

Carefully dig around the perimeter of the mum plant, using a garden fork to loosen the soil. Try to keep as much of the root ball intact as possible.

3. Lift and Separate

Once loosened, gently lift the entire mum clump from the ground. Shake off excess soil to reveal the root system. Use your hands or a sharp shovel to carefully separate the clump into smaller sections. Each section should have healthy roots and several stems.

4. Inspect and Prepare Divisions

Inspect each division for any dead or damaged roots. Trim away any unhealthy portions using pruning shears. Ensure each division has a good root system and several healthy stems.

5. Replant the Divisions

Plant the divided mums in their new locations. Ensure the crown of the plant (where the stems emerge) is at or slightly above the soil level. Water thoroughly after planting.

6. Aftercare

Water regularly, especially during dry periods. Mulch around the newly planted mums to help retain moisture and suppress weeds. Fertilize lightly in spring to encourage vigorous growth.

Troubleshooting Common Problems

Mums not blooming: This could be due to insufficient sunlight, poor soil drainage, or overcrowding. Ensure your mums receive at least 6 hours of sunlight daily and plant them in well-draining soil.
Root rot: This can occur if the soil is poorly drained. Improve drainage by adding organic matter to the soil.
Pest infestations: Regularly inspect your mums for pests and treat them accordingly.

Frequently Asked Questions (FAQs)

Q: Can I split mums in the summer?

A: It's best to avoid splitting mums in the hottest part of summer. It's more stressful for the plant, increasing the chances of failure.

Q: How often should I split my mums?

A: Every 3-5 years is usually sufficient, depending on the growth rate of your specific mum variety.

Q: Can I propagate mums from cuttings?

A: Yes! Mums can also be propagated from stem cuttings. This is a great way to quickly increase your mum collection.

By following these steps, you can successfully divide your mums, resulting in a vibrant and abundant display of these beautiful flowers year after year. Remember, patience and the right technique are key to success!