Home > Question >

When can I start spraying greenfly on a leyland conifer hedge?

Our Advice:

Cypress aphids cause brown patches of dead foliage by sucking the sap. Watch for yellow mottling on shoot tips to indicate that insects are actively feeding. This would usually start in late-March or early-April so spray then.

Here are some related questions:

Not what you are looking for?

If you can't find what you are looking for on the website then you can ask one of our experts. To get in touch with us Click Here

We will try to get back to you with an answer as soon as we can.

Here is some more information for you:

Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.

Ask another gardening question:

Learn More About Pests and Diseases

Gardening Projects for September

---

How to Propagate Lilies from Bulbils

How to care for your lawn in Autumn

How to plant through weed-suppressing membrane

How to turf a lawn

Latest Gardening Videos

---

How can I get rid of a red ant nest in my lawn?

Growing Nasturtiums

Will tulips grow in the shade?

Five Essential Tips for Growing Lemons

When is the best time to prune my bottle brush plant?

Why are my pansies and violas wilting?

All Videos

Explore Gardens from Around the World

Monet's Garden, Giverny
Giverny, France

Vallarta Botanical Garden
Vallarta, Mexico

Humble Administrator's Garden
Suzhou, China

Shinjuku Gyoen National Garden
Tokyo, Japan

Koishikawa Korakuen Gardens
Tokyo, Japan

Kirstenbosch National Botanical Garden
Cape Town, South Africa