A mature lime can look perfectly healthy while serious decay is developing out of sight. This Field Note looks at why plant health often begins not with diagnosis, but with observation: noticing the small signs, reading the pattern, and knowing when something deserves a closer look.

Every gardener has a list of plants they reach for again and again, not the prima donnas of Instagram and the show gardens, but the ones that come back year after year and ask very little in return. After two decades working gardens from Argyll and Bute to Caithness, here are my five unsung heroes of horticulture.

If a tree disease is already here and already spreading, why spend a penny defending against it? It is a fair question. Here is why keeping it out and keeping it down are two entirely different jobs.

What can a survey see that a walk over the ground cannot? A morning's flight in Sutherland turned up a feature a century of records had missed, and showed why you look before you break ground.

What can a drone actually tell you about a piece of ground? A morning's survey at Littleferry produced four layers of insight, and revealed a century of quiet landscape change.

MacDonald Horticulture grew out of nearly two decades spent working with significant gardens, historic landscapes and plant health. From Edinburgh and Giverny to the Royal Parks, Mount Stuart and the Highlands, this is the journey that shaped the consultancy today.

Visiting contractors can unintentionally introduce pests and pathogens through vehicles, machinery, tools and footwear. Here’s how estates and gardens can reduce the biosecurity risk.

When Phytophthora takes hold on an estate, the cost can extend far beyond the trees themselves. Early recognition and rapid triage can mean the difference between a contained problem and major landscape, operational and financial loss.

Dothistroma needle blight is an increasing threat to pine woodlands and estates. Learn how to recognise the disease, understand the risks and improve biosecurity.