Crocosmia corms, particularly the variety Lucifer, have a natural tendency to multiply and spread each year. This means that if you plant just a few corms initially, you can expect to have a larger and more impressive display in subsequent years. The process of spreading is mainly achieved through the production of new corms, which develop alongside the original corm and eventually become independent plants.
To ensure the continued health and vigor of your Crocosmia plants, it is recommended to lift and divide congested clumps every few years. This is because overcrowded clumps can lead to reduced flowering and overall plant performance. Dividing the clumps allows each individual plant to have more space, nutrients, and sunlight, promoting healthy growth and abundant blooms.
When it comes to lifting and dividing Crocosmia corms, timing is crucial. The best time to undertake this task is in early spring, just as new growth begins to emerge. This allows the plants to recover and establish themselves before the hot summer months.
Here is a step-by-step guide on how to lift and divide Crocosmia corms:
1. Dig up the clump: Use a garden fork or shovel to carefully lift the clump of Crocosmia plants from the ground. Take care not to damage the corms or roots during this process.
2. Separate the corms: Gently shake off any excess soil and carefully separate the individual corms from the clump. You may need to use your hands or a small gardening tool to carefully tease them apart. Look for healthy, plump corms that show signs of new growth.
3. Inspect and discard: As you separate the corms, inspect them for any signs of damage or disease. Discard any corms that appear unhealthy or shriveled, as they are less likely to produce vigorous plants.
4. Replant or store: Decide whether you want to replant the divided corms immediately or store them for future use. If you choose to replant, make sure to space the corms adequately, following the recommended planting depth and spacing for Crocosmia. If storing, place the corms in a cool, dry location until you are ready to replant or share them with fellow gardeners.
5. Amend the soil: Before replanting the divided corms or planting new ones, consider amending the soil with organic matter such as compost or well-rotted manure. This will improve the soil’s fertility and drainage, creating a favorable environment for the Crocosmia plants to thrive.
6. Water and mulch: After replanting the corms, water the area thoroughly to help settle the soil around the roots. Apply a layer of organic mulch, such as wood chips or straw, to help retain moisture and suppress weed growth.
7. Monitor and maintain: Keep an eye on your newly divided Crocosmia plants and provide them with regular care and maintenance. This includes watering during dry spells, removing weeds, and providing support if necessary, as some varieties may benefit from staking to prevent flopping.
By regularly lifting and dividing congested clumps of Crocosmia corms, you can ensure the ongoing health and vitality of your plants. This practice also allows you to propagate and share these beautiful flowers with others, adding to the joy and satisfaction of gardening.
