Ageratum houstonianum (Floss Flower)

How to grow Ageratum houstonianum (Floss Flower) in NZ

Ageratum houstonianum (Floss Flower) grows best in full sun to partial shade and prefers fertile, free draining soil. Plant in a warm, sheltered position for the best flowering results. Water regularly during establishment and keep the soil evenly moist through summer. It grows well in garden beds, containers, and cottage style plantings across NZ. Feeding with a balanced fertiliser during active growth supports strong blooming.

Ageratum houstonianum (Floss Flower) care tips

Ageratum houstonianum (Floss Flower) is easy to care for and thrives with simple maintenance. Remove spent blooms to encourage continuous flowering. Water during dry periods to prevent stress and maintain lush growth. A light application of fertiliser every few weeks helps extend the blooming season. Protect the plant from strong winds and avoid waterlogged soils. With regular deadheading, it provides colour for many months.

Ageratum houstonianum (Floss Flower) size spacing and growth rate

Ageratum houstonianum (Floss Flower) typically grows twenty to thirty centimetres tall and spreads about twenty to thirty centimetres wide. Space plants twenty to twenty five centimetres apart for full coverage. Growth is fast during warm weather, and plants establish quickly when provided with moisture and light feeding. As an annual, it completes its life cycle in one season but flowers repeatedly throughout the warmer months.

Landscaping uses for Ageratum houstonianum (Floss Flower)

Ageratum houstonianum (Floss Flower) is ideal for borders, edging, cottage gardens, and container arrangements. Its soft, fluffy blooms add texture and blend beautifully with petunias, marigolds, salvias, and other warm season annuals. Use it for mass planting to create a dense carpet of colour or mix it into floral displays for a gentle, cloud like effect. It brings long lasting charm to both contemporary and classic garden styles.

Why buy Ageratum houstonianum (Floss Flower) from The Plant Company?

Ageratum houstonianum (Floss Flower) from The Plant Company is supplied as healthy, high quality plants selected for vigorous growth and generous flowering. Each plant is grown with care to ensure strong establishment in NZ conditions. The Plant Company is NZs most trusted plant nursery and offers expert advice to help customers succeed. Choosing this variety guarantees vibrant colour, reliable quality, and excellent value for your garden.