The Ultimate Buxus | Box | Boxwood Care Guide

Box plants have had an undeniably tough time in recent years. While box blight has long been a concern, the arrival of the box tree caterpillar has made Buxus care far more challenging. Some gardeners now avoid Buxus entirely, but for such a defining plant in European gardens, it’s unthinkable to let it fade away.

As a long-standing defender of the humble box (and self-appointed member of the “Box Protection Council”), I’m determined to preserve this iconic plant for as long as possible (in my own garden at least). So I’ve developed a year-round Buxus care schedule that has kept my own box hedging and topiary in excellent condition. Yes, it requires commitment, but that’s gardening. And there is still nothing quite like a perfectly clipped, deep green box plant.

Below is your complete month-by-month Buxus care guide to keep box plants healthy, fed, and looking pristine all year!

January & February | A Simple Start

Winter care is minimal but important for long-term Buxus health.

• Clear leaves and debris from foliage and from underneath the plants to prevent fungal build-up and maintain good airflow

• Inspect plants for winter damage

• Remove snow from hedges and topiary (this can really disfigure topiary with long lasting effects, particularly when it begins to melt then freezes solid)

• Watch for water logging and relocate into containers if necessary whilst you sort out the soil

• No trimming or treatments needed right now

March | Preparing for Growth

This is the first moment to take action in your annual Buxus care routine.

• I apply Topbuxus Grow Fertiliser (first granular feed) following the manufacturers instructions.  It’s pricey but gives the plants the wake up boost they need.

• Optional if plants are overgrown or in need of rejuvenation  | Prune sparse or leggy plants NOW, box can be cut back hard now and will bounce back well (it may take a year of two before its back in leaf).

• No spraying required yet

April | Pest Prevention Begins

Caterpillar season is approaching, so prevention is key.

• Hang reusable moth traps mid-month. These need to be hung 1.5-2m above ground level (check with the supplier, as some lure scent sticks last for a whole season but with others, be prepared to refresh lures every 6 weeks)

• Begin monthly TopBuxus Health Mix sprays – Follow the manufacturers instructions and don’t worry about the pale blue/milky residue that appears as the leaves dry, it’ll wash off in the rain.  You’re aiming for 5 sprays spaced throughout the growing season.

• Inspect for box caterpillars and apply Box Caterpillar Nematodes now (only if caterpillars are detected), and repeat at 7 and 14 days afterwards.

• Do not trim this month

May | Keep Plants Moving Forward

This month your Buxus care programme starts to ramp up as growth accelerates.

• Apply Topbuxus Grow (this is a second granular feed)

• Continue monthly Health Mix sprays. I always put a reminder in my diary that repeats annually.

• Check moth traps weekly and empty if necessary.  It’s a good idea to monitor how many you are catching as this will indicate the likelihood of an infestation.  Trapping prevents breeding so you’re effectively breaking the cycle and (I’m told) that no other moth species are affected.

• Carry out a light maintenance trim (late May or early June).  Traditionally done on Derby day, but I’ve been known not to trim mine till October!

June | Time to Get Hands-On

Early summer is when caterpillar activity often increases.

• Continue with your monthly Health Mix spray

• Refresh moth trap lures

• Apply Box Caterpillar Nematodes at the end of June if caterpillars are active

• Trim this month if you didn’t in late May.  Ideally choose a warm & gently breezy but not hot, and definitely not a damp day.

July | Steady Summer Maintenance

The height of the season calls for steady but simple Buxus care routine.  Don’t start slacking now because this continued care will help make the plants stay strong.

• Apply Topbuxus Grow (third granular feed)

• Continue monthly Health Mix spray

• Check moth traps weekly

• Maintenance trim (mid–late July)

August | Late-Summer Protection

A crucial month for preventing late-season caterpillar damage.

• Continue monthly Health Mix sprays

• Refresh moth trap lures

• As we move gently into autumn, apply an end-of-month Box Caterpillar Nematodes treatment to catch the third generation (this should help stop any laying and overwintering).

• No trimming this month

September | Final Feed of the Year

This last push sets your plants up for autumn strength.

• Apply final Health Mix spray

• Check moth traps weekly

• Optional light trim (If you trimmed in May/June, you may want to carry out an early September trim to tidy things up ready for winter)

October | Winding Down

Time to tidy up before winter begins.

• Take down and throughly clean out your moth traps and store them for winter

• No trimming  is needed this month if you’ve already trimmed once or twice this year, but if you haven’t trimmed at all, and you’ve been a bit lax with your feeding routine, the plants may not have put on much growth, so a trim now (in my experience) not only tidies them up ready to be adorned in net fairy lights, but also (some say) may help reduce box blight!

November & December | Rest and Review

Your Buxus are dormant, and so are you.

• Clear leaves and debris from the top and around the base of plants

• Review the year’s treatments and overall plant health

• No trimming required

Important Notes on Treatments

Always follow manufacturer instructions when applying feeds, sprays, and tonics. Do not over-apply, especially during warm spells.

XenTari and BuxRevive are not yet approved for amateur use in the UK (currently under testing). They must not be used by the public until fully licensed.

Check for updates at the UK Government pesticide pages:
https://secure.pesticides.gov.uk/garden/prodsearch.asp
Information correct as of November 2025.

Why Consistent Buxus Care Still Matters

Despite the challenges, Buxus remains one of the most versatile, structured, and character-defining plants in garden design. With the right care, and a little determination, you can keep box hedging, topiary, and borders looking exceptional year-round.

Healthy Buxus is absolutely achievable. And with a consistent, proactive approach, you’ll be rewarded with rich green foliage, crisp shapes, and the timeless elegance that only box can offer.

If you want to have a look at some of our buxus planting, get inspired here.

This page was published November 2025 and updated 1st April 2026