Why Boxwood has a bad odor and what you can do about it

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Have you noticed an unpleasant smell coming from your boxwood lately? Don't worry; you're not alone. The boxwood plant is notorious for producing an obnoxious odor that can make your garden less enjoyable. But why does it happen, and what can you do to fix the problem?

Boxwood odor problem

Why does boxwood have a bad smell?

The pungent smell of boxwood comes from a compound called cyclohexanone. This substance is present in all parts of the plant, including the leaves, stems, and roots. When boxwood plants are damaged or stressed, they release more cyclohexanone, which intensifies the odor.

Is the odor harmful?

Fortunately, the bad smell produced by boxwood is not harmful to people or pets. However, some people may find it unpleasant or irritating, especially if they have allergies or respiratory problems.

What causes the odor?

Boxwood odor is primarily caused by stress. Factors such as poor soil quality, overwatering, underwatering, and lack of sunlight can cause boxwoods to become stressed and emit more odor.

How to identify whether your boxwood is producing bad odor?

It's quite simple to identify whether your boxwood is producing a bad odor. You can simply touch the leaves, stems, and other parts of the plant and smell them. If you detect a pungent aroma similar to mothballs, then your boxwood is likely emitting cyclohexanone.

Boxwood care

Proper care of boxwoods is essential to keep the odor under control. Here are some tips for maintaining healthy boxwoods:

Soil preparation

Before planting your boxwoods, make sure the soil is well-draining and has a pH level between 6.5 to 7.2, which is ideal for boxwoods. You may also want to add organic matter like compost or aged manure to improve soil quality.

Watering

Boxwoods require regular watering but don't overwater them as it can lead to root rot and stress. Water once a week, ensuring that the soil is moist but not waterlogged. During the hot summer months, you may need to water more frequently.

Fertilizing

Applying fertilizer to your boxwoods can improve their overall health and appearance while reducing stress. Use a slow-release granular fertilizer with a nitrogen-phosphorus-potassium ratio of 10-6-4 in early spring or fall.

Mulching

Mulching around your boxwoods can help retain moisture, control weeds, and regulate soil temperature, which can reduce stress. Use natural mulch like shredded leaves or pine needles and keep it at least two inches away from the base of the plant.

Pruning boxwood

Proper pruning is essential for maintaining healthy boxwoods and reducing odor. Here are some tips for pruning your boxwoods:

When to prune boxwood?

Prune your boxwoods in late winter or early spring before new growth emerges. Avoid pruning in fall or winter, as this can stimulate new growth that may be damaged by freezing temperatures.

How to reduce odor through pruning?

You can reduce the production of cyclohexanone and minimize odor by removing dead, damaged, or diseased branches and leaves. Use sharp and clean shears or pruners to make quick, clean cuts. Wearing gloves is essential as some people may be allergic to boxwood.

In boxwoods can produce an unpleasant smell, but with proper care and pruning, you can mitigate the problem. Remember to always wear gloves and take safety precautions while handling boxwood.

FAQ

1. Is it possible for boxwoods to smell good?
   • No, the natural aroma of boxwood is pungent and unpleasant.
2. Can I still use boxwood prunings in my compost bin even if they have a bad odor?
   • Yes, you can still use them, but make sure to mix them with other organic matter like grass clippings or leaves to control the odor.
3. Should I remove my boxwood plants if they produce a bad smell?
   • It's not necessary to remove them unless they are dying or diseased.
4. What is the best time of year to prune boxwood?
   • Late winter or early spring before new growth emerges is the best time to prune boxwood.
5. Will trimming my boxwoods more frequently help reduce odor?
   • Yes, frequent trimming can stimulate new growth and limit the production of cyclohexanone.
6. Why does it seem like only certain boxwoods produce a bad odor?
   • This may be due to genetic variations, environmental factors, or certain pests.
7. Can fertilizing boxwoods reduce odor?
   • Yes, applying fertilizer can improve overall plant health and reduce stress, which can minimize odor production.
8. Are there any natural remedies to reduce boxwood odor?
   • Unfortunately, there are no proven natural remedies for reducing boxwood odor.
9. Can boxwood odor attract pests around my garden?
   • Some pests like deer, rabbits, and boxwood psyllids are attracted to boxwood, but the odor itself is not a significant factor.
10. Is it safe to use fungicides or other chemicals to control boxwood odor?

• We do not recommend using any chemical or fungicide to control boxwood odor as it may harm beneficial insects, animals, or humans.