Agapanthus growing guide

Ideal for edging and borders, agapanthus are easy to grow. But to keep yours flowering and looking their best all year round, it’s important to know how to take care of them.

When you see agapanthus in full bloom, you know it’s summer. Their vibrant, colourful flowers and shiny green leaves can really brighten up your garden. You can spruce up a pool area or deck with agapanthus borders and improve the look of driveways, fence lines or garden beds with agapanthus edging.

The most common flower has shades of blue and white. However, there are varieties of white flowers blushed with pink, and a herbaceous variant with rich purplish blue flowers.

Plants come in a variety of sizes ranging from clumps over a metre tall and wide to the smallest, which is around 30cm high.

How to plant and grow agapanthus

Agapanthus form attractive clumps up to a metre across so give yours some space. For best results, follow these planting and growing tips:

  • Plant in early spring so that the plants can flower in summer
  • Plants should be about 60cm apart and planted 2.5cm deep
  • Position in full sun for cooler climates or part shade for hotter weather
  • Plant in a well-drained, moderately fertile soil with plenty of organic matter worked in, like compost, composted sawdust and manure
  • If you’re growing agapanthus in pots, don’t worry if the roots get congested as agapanthus do well in these conditions.
  • Caring for agapanthus

    While agapanthus are hardy and can survive most weather conditions, some water and fertiliser won’t go astray. Follow these tips to ensure your agapanthus thrive:

  • Water regularly to help establish a strong root system, especially during the first growing season. Treat with a seaweed tonic, sulphate of potash or any other potash-rich fertiliser around the end of September to reap the flowery rewards
  • Mature plants are drought resistant, so allow soil to dry between waterings
  • Prune any spent flower heads. It will look neater, prevent unwanted seeds from spreading and help retain the colour you want because new seedlings can sprout white instead of blue or vice versa
  • Pruning also promotes stronger healthier plants because energy is not wasted producing seeds
  • Agapanthus rarely need spraying with insecticide but if you notice any pests like mealy bugs or red spider mites, spray during the winter months
  • Divide root clumps every two to three years in early spring, after the plants have flowered, to help with propagation.
  • What to look out for

    While some gardeners love what agapanthus bring to their garden, others consider them a weed. In some cases, this is true, especially in seaside areas where they have spread by seed and naturalised. To stop this from happening in your neighbourhood, remember to prune spent flowers regularly.

    It’s also important to remember that Agapanthus is considered poisonous. There is some evidence to suggest that exposure to your skin or eyes can cause short-term irritation while the sap may cause severe mouth ulcers if eaten. So take care, especially with children.

    Wide range of plants

    Check out our huge range of plants in all shapes and sizes.

    front yard raised timber garden bed 01:04

    Planning & Projects How to give your front garden a D.I.Y. makeover With some simple D.I.Y. skills, you can transform your front yard into something special that will improve your home’s street appeal.

    grow herbs

    Planting & Growing Gardening for kids Gardening is great for the kids—it teaches them a love of nature and the environment, where food comes from, how to care for plants and the joy of reaching a goal. Here are some ideas to get them outside and in the garden.

    Person cutting the corrugated edging 03:08

    Planting & Growing How to install garden edging Garden edging can help to make your garden beds look neat and tidy. We’ll show you how to install plastic or corrugated garden edging around your garden.

    grow herbs

    Planting & Growing How to grow herbs indoors Herbs are one of the most rewarding plants to grow. But you don’t need a big garden to reap the tasty benefits. All you need is a sunny window or two and a little bit of time. Get started with these inside tips from Bunnings’ Greenlife Buyer Sharyn ...

    Raised garden bed 06:44

    Planting & Growing How to build a raised garden bed with sleepers Check out our simple, step-by-step guide on how to build a raised bed garden from sleepers.

    Position and fill your greenhouse 03:47

    Planting & Growing How to build a greenhouse A greenhouse gives your plants every chance to thrive while protecting them from harsh weather.

    How to attract birds bees and wildlife to your garden

    Planting & Growing How to attract birds, bees and wildlife to your garden You can create a habitat for natural wildlife that attracts birds, bees and insects. Here are some easy ways to do this in your own backyard.

    How to improve soil organically

    Planting & Growing How to improve soil organically The key to a thriving garden is to have rich, healthy soil that in turn supports strong plant growth, improved flowering and bigger harvests in the vegie patch. Here’s some advice on how to fix the most common soil problems from Eco Organic Garden.

    Six plants that repel mosquitoes and flies

    Planting & Growing Six plants that repel mosquitoes and flies Using plants is a natural and effective way to repel mosquitoes, flies and other insects from entering your home. Here’s a list of the six best insect-repelling plants.

    Person planting spinach 03:11

    Planting & Growing How to grow vegetables Watch our step-by-step guide and find out everything you need to know about how to grow fresh vegetables in your garden.

    Geraniums

    Planting & Growing How to create a low-allergy garden If you suffer from hay fever or other allergies, then being out in the garden can, at times, be less than enjoyable. But there are some steps you can take to create an allergy-friendly garden so you can spend more time gardening and less time sneezi...

    Grevillea plant

    Planting & Growing 11 ground covers for your garden Whether you’re looking to cover a large area or simply fill some space between plants in a garden bed, there are many types of garden ground covers to consider. Some have a scent, some feature flowers and all vary in leaf colour, density and coverag...

    Person tying plant to the stake 03:43

    Planting & Growing How to stake your plants Staking plants helps provide support and protection against windy conditions and props them up if they’re too heavy.

    Dig the holes for planting the hedge 02:04

    Planting & Growing How to plant a hedge There are many different varieties of hedging plants to give your garden some extra dimension or added privacy. We’ll show you how to plant a hedge that is perfect for your garden.

    shovel

    Garden Tools How to choose digging tools The right tool will make any job easier, especially when it comes to digging. And when it comes to digging, there's no shortage of tools to choose from – but which tool is right for which job?

    grow herbs

    Planting & Growing Gardening for kids Gardening is great for the kids—it teaches them a love of nature and the environment, where food comes from, how to care for plants and the joy of reaching a goal. Here are some ideas to get them outside and in the garden.

    Health & Safety

    Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

    Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.
    Top of the content