The Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 (Sprinter® Boxwood) Full Care Guide

The Sprinter® Boxwood, otherwise known as the Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 or Small-Leaved Boxwood ‘Faulkner’, Buxus sempervirens ‘Faulkner’, is a rather well known shrub plant by gardening enthusiasts around the world.

Best known for its low maintenance and fast growth, this shrub will likely liven up your house (or garden) with its green colored leaves. But, only if you learn how to take proper care of it for it to thrive.

This is why all the topics you need to know in order to achieve this will be covered in this Sprinter® Boxwood Care Guide. Ready? Let’s go!

The basic care guidelines you need to remember for your Sprinter® Boxwood are the following:

  • Water: The Sprinter® Boxwood prefers constant watering each week and more during the hot season.
  • Light: Keep your Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 in an environment where it can receive partial to full sun on a daily basis. 
  • Soil: Make sure to keep the Sprinter® Boxwood in soil with moist but well-draining to well draining properties, so ideally, one that is made of clay, loam, chalk, and sand.

That’s it – sunlight, water and soil! The basic 3 fundamentals for all plant care, and with the Sprinter® Boxwood this is no exception. With these three elements, your leafy friend will live healthy and happy.

Sprinter® Boxwood plants

Scientific / Botanical Aspects

In botanical terms, the Sprinter® Boxwood belongs to the Buxaceae family, the genus Buxus and the species Microphylla, hence its scientific (or botanical) name Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 (BUK-sus my-kroh-FIL-uh).

As with other Buxus’s, the Sprinter® Boxwood is an evergreen plant, which means it will be present year round in your garden.

Growing Region

The Sprinter® Boxwood is a plant native to the Japan.

Knowing your plant’s native region is very useful, as it can give you tips on which environment is best for your Sprinter® Boxwood. If you keep it in mind, you can try to replicate these conditions at home, and you’ll likely end with a healthier plant.

With this in mind, the Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 will be most used to the heat zones in the 6 – 9 region, as the plant hardiness level falls between 6b, 6a, 7b, 7a, 8b, 8a, 9b, 9a and the ideal climate zone is between 3, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

Growth and Size


In terms of size and growth, the Sprinter® Boxwood is a relatively fast grower, which makes things tricky for any plant enthusiast.


But, how big does the Sprinter® Boxwood actually get? What should you expect in terms of size? Let’s dive right in…

The Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 can grow up to 3′ – 4′ (90cm – 120cm) in 3′ – 4′ (90cm – 120cm) and 2′ – 3′ (60cm – 90cm) in 2′ – 3′ (60cm – 90cm). 

These dimensions make the Sprinter® Boxwood a relatively medium shrub compared to others, so it’s best to keep this fact in mind since it will affect where you want to keep yours at home.

Also, expect it to grow in a wonderful rounded shape, which is something worthwhile to remember when making your garden landscape plans.

This is why experts recommend keeping an area of approximately 36″ (90cm) free so the Sprinter® Boxwood can spread to its best extent.


In terms of watering, the Sprinter® Boxwood is a fairly simple plant to take care of.

This is mostly because it has a straightforward watering schedule and somewhat regular watering needs.

Specifically, most experts agree that the Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 prefers constant watering each week and more during the hot season.

Which is why it is considered a plant with relatively average needs in terms of water. 

Sprinter® Boxwood care


As a rule of thumb, you should remember to keep your Sprinter® Boxwood in soil with moist but well-draining to well draining characteristics, as these will guarantee the right conditions for your plant to grow and thrive. 

When you consider this, this is why you should aim to choose soil that has good drainage properties to keep the right moisture levels at all times. 

In our experience, the famous ‘thumb’ or ‘finger’ test is what works best for the Sprinter® Boxwood since with it, you will be able to give it the right amount of water, every time – regardless of the environment or placement where you do decide to keep it.

Soil Mix

As mentioned earlier, the Sprinter® Boxwood prefers to have soil with good drainage properties at all times, reason why you need to make the soil mix out of clay, loam, chalk, and sand.

This is why most experts agree that the Sprinter® Boxwood requires soil with clay, and sand, which will give you the right conditions it needs.

In addition to this, expert gardeners recommend having preferably alkaline, acid or neutral soil.

Light and Exposure

In terms of light & exposure, the Sprinter® Boxwood requires partial to full sun in order for it to thrive under the right conditions. 

Most experts agree that this shrub will do well as long as you keep it in shade, or partial sun to full sun, and it will be able to grow properly.

Specifically, we recommend that you place your Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 in full and direct sun (more than 6 hours of direct sunlight per day).


Being an evergreen plant, the Sprinter® Boxwood will be present year round in your garden.

But, you can expect it to have its ‘prime-time’ during the spring (early, mid, late), the summer (early, mid, late), the fall, and during the winter.


You can expect your Sprinter® Boxwood to flower around the spring months from April to June (spring).

The Sprinter® Boxwood produces some wonderful white flowers around this time of year.


The leaves from the Sprinter® Boxwood have a beautiful green color during most of the year.

In particular, they have a simple arrangement with a opposite organization in its leaves.

You can expect the leaves from your Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 to be around (< 1 inch) in size.

Sprinter® Boxwood leaves

Attracts, Tolerance and Resistance

The Sprinter® Boxwood is well known for its tolerance to drought and animals like rabbit and deer, so don’t worry if any of these come along, your Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 will be fine.


Does your Sprinter® Boxwood have any garden recommendations? Does it serve any gardening purposes? Here’s how you can get the most out of your new plant.

Most Buxus Microphylla ‘Bulthouse’ Plant Patent #25,896 owners agree that this shrub will look great in most cottage, asian/zen contemporary, and mediterranean gardens of all types. 

Other owners consider that they complement well most gardens of mediterranean garden, city and courtyard, formal garden, and in modern garden styles. 

In particular, the Sprinter® Boxwood’s best location within your garden is in hedges and screens, beds and borders, and in patio and containers, others use it for landscaping in a topiary, mass planting, container, border, edging, hedge, or a urban garden.

Companion Plants

Sprinter® Boxwood’s do well with some other plants beside it. One good companion plant is the Miscanthus, which will pair up nicely with your leafy friend.

Others consider that a nice Spiraea will work well too, so choose whichever you find works best for you!


And we’ve come to an end. Fortunately, that’s everything you need to know about your Sprinter® Boxwood to keep it safe and sound in your garden or home. Enjoy planting!

Sebastian Moncada

I’m also a plant enthusiast and researcher. I’ve been privileged to have lived my whole life around the wilderness of Colombia and I’m happy to share everything I learn along the way. “Adopt the pace of nature. Her secret is patience” – Emerson.

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