How To Divide Agapanthus: A Horticulturist’s Guide

How To Divide Agapanthus

In horticulture, few things are as rewarding as successfully propagating your plants. If you’re wondering, “How can I effectively divide my Agapanthus plants?”, you’re in the right place. In this comprehensive guide, we’ll delve into the process with expert advice and tips on when and how to divide and replant these beautiful perennial plants.

Getting Started: Understanding Agapanthus Growth

To effectively divide your Agapanthus, it’s important first to understand their growth cycle and characteristics. Agapanthus plants, also known as Lily of the Nile, are a robust and beautiful species, known for their bright blue or white flower clusters atop tall, slender stems.

They’re most commonly propagated by division, a method that allows gardeners to effectively increase their plant population while maintaining the same plant traits, unlike propagation from seed which can result in variations.

When Should You Split Agapanthus?

The best time to divide Agapanthus is during their dormant period, usually in early spring or late autumn, once the flowering has finished and before new growth starts. Dividing them during this period reduces the stress on the plant and allows them to recover faster. Splitting them outside of this period can still be done, but it requires more care to ensure the plants recover.

Step-by-Step Guide: How To Divide Agapanthus

Now, let’s dive into the nitty-gritty: the actual process of dividing your Agapanthus plants.

Preparing for Division

First, water the plant well a day or two before the planned division. This will ensure that the plants are well-hydrated and more pliable, reducing the chance of root damage during the process.

Digging Up the Plant

Carefully dig around the base of the plant, taking care to keep as much of the root ball intact as possible. Once loosened, lift the plant from the ground.

How To Divide Agapanthus


Splitting the Clump

Split the root ball into sections using a sharp, clean knife or a garden spade. Each section should have a portion of roots and several stems.

Replanting the Divisions

Replant the new divisions at the same depth as they were originally growing. Firm the soil around them, water well, and apply a layer of mulch aroun

d the base to help retain moisture.

Post-Division Care

Proper care after division is crucial for the newly planted divisions to establish and thrive.

Watering and Fertilizing

Regular watering is essential, especially in the first few weeks after division. The soil should be kept moist but not waterlogged. After a fe

w weeks, a slow-release balanced fertilizer can be applied to promote growth.

Winter Care: Do I Cut My Agapanthus Plant Back in Winter?

Agapanthus plants are fairly winter-hardy, but they benefit from some extra care during the colder months. After the first frost, cut back any spent foliage to ground level to keep the plant tidy and to discourage pests and diseases.

What Should You Do with Agapanthus After Flowering?

Once flowering has finished, you should deadhead the plants. This encourages more flowers the following year and prevents the plants from wasting energy on producing seeds. If you plan on dividing the plants, this is the ideal time to do so.

How To Divide Agapanthus

Can You Split Agapanthus in Autumn?

Yes, you can! In fact, autumn is one of the best times to divide Agapanthus. The plants are entering dormancy and this gives them ample time to establish before the growth spurt in spring.

Dividing Agapanthus can seem daunting, but with a bit of preparation and care, it can be a rewarding and effective way to propagate these beautiful plants. So go ahead, don your gardening gloves, and get started on your next horticulture project!