Buxus Sempervirens 'Graham Blandy' (American Boxwood) Complete Care Guide | Big Boy plants (2023)

American boxwood, also known as Buxus Sempervirens 'Graham Blandy' or boxwood 'Blauer Heinz', common boxwood 'Blauer Heinz', English boxwood 'Blauer Heinz', is a fairly well-known shrub to gardeners around the world.

Known for its low maintenance and slow growth, this shrub is likely to add life to your house (or garden) with its green foliage. But it will thrive only if you learn how to take care of it properly.

Luckily, that's exactly what we're going to cover in this American Boxwood care guide. So let's go.

In order to properly care for your American Boxwood, you must keep the following guidelines in mind:

  • Water:American boxwood likes constant watering on a weekly basis, especially during the hot season.
  • Light:Place your Buxus Sempervirens 'Graham Blandy' in a location that gets part to full sun every day.
  • tlo:Be sure to keep American boxwood in moist but well-drained soil, so clay, loam, chalk, and sand soils are ideal.

That's it - sun, water and soil! 3 essentials for plant care and American boxwood is no exception. With these three elements, your green leaf will live healthy and happy.

Buxus Sempervirens 'Graham Blandy' (American Boxwood) Complete Care Guide | Big Boy plants (1)


Scientific/botanical aspects

Botanically, American boxwood belongs to the boxwood family, genera Buxus and Sempervivum, hence its scientific (or botanical) name 'Graham Blandy' (BUK-sus sem-per-VY-renz).

Like other boxwoods, American boxwood is an evergreen plant, meaning it will appear in your garden year-round.

planting area

American boxwood is a plant native from Europe to northern Iran and northern Africa.

As a rule of thumb, we recommend that you always keep your plant's native region and environment in mind, as these are the conditions your American Boxwood is most accustomed to in order to grow most favorably.

With this in mind, Buxus Sempervirens 'Graham Blandy' will most often be used in hot zones 6 – 8 as the plant's hardiness level is between 5b, 5a, 6b, 6a, 7b, 7a, 8b, 8a and the ideal climate zone is between 3, 3B, 4, 5, 6, 7, 8, 9, 15, 16, 17.

growth and scale

to find

In terms of size and growth, American boxwoods grow relatively slowly, which should be easy for any plant lover.


But how big is the American boxwood we're talking about? What are your height, width and spacing expectations? Let's dive into...

Buxus Sempervirens 'Graham Blandy' can grow up to 1' - 2' (30cm - 60cm) by 1' - 2' (30cm - 60cm) by 1' - 2' (30cm - 60cm).

These dimensions make the American boxwood a relatively medium-sized shrub compared to other shrubs, so it's best to keep this fact in mind as it can affect where you place your boxwood in your home.

Also, expect it to grow in a beautiful columnar and narrow shape, something worth keeping in mind when making your landscaping plans.

That's why experts recommend leaving about 18" - 24" (45cm - 60cm) of free space where the American boxwood can spread the most.


As far as watering is concerned, American boxwood is a fairly easy plant to care for.

This is mainly because it has a simple watering schedule and some regular watering needs.

In particular, most experts agree that boxwood 'Graham Blandy' likes constant watering on a weekly basis, and even more so during the hot season.

This is why it is considered a plant with relatively average water needs.

Buxus Sempervirens 'Graham Blandy' (American Boxwood) Complete Care Guide | Big Boy plants (2)


As a rule of thumb, remember to plant your American boxwood in moist but well-drained soil, as this will guarantee the right conditions for your plants to grow and thrive.

When you consider this, this is why you should choose a well-drained, occasionally moist soil to maintain adequate moisture levels at all times.

However, in our experience, the best solution to find out how much water is right for your American Boxwood is to use the "thumb" technique. Basically, you stick your finger into the soil and if you feel the soil is wet or dry, you can tell if it needs water, which is the most appropriate way to water your leafy friend.

soil mixture

As mentioned earlier, American boxwood likes well-drained soil that is occasionally always moist, which is why you need a soil mix of clay, loam, chalk, and sand.

Because of this, most experts agree that American boxwood needs soil rich in organic matter, loam (silt) and sand, which will provide the right conditions for what you need.

Additionally, expert gardeners suggest that alkaline, acidic or neutral soils are best.

lights and exposures

In terms of light and exposure, American boxwood needs partial to full sun to thrive in the right conditions.

Most experts agree that this shrub will perform well and grow normally as long as it is kept in shade or part sun to full sun.

In particular, we recommend placing your Buxus Sempervirens 'Graham Blandy' in light to partial shade (only 2-6 hours of direct sunlight per day) and full direct sunlight (6+ hours of direct sunlight per day).


As an evergreen, American boxwood will appear in your garden year-round.

However, you can expect them to have their "best times" in spring (early, mid, late), summer (early, mid, late), fall, and winter.


You can expect your American boxwood to bloom in the spring, from April to June (spring).

American boxwood produces beautiful cream/brown and gold/yellow flowers this time of year.


American boxwood leaves are a beautiful green color for most of the year.

In particular, they have a simple layout with the opposite organization in sheets.

You can expect the leaf size of Buxus Sempervirens 'Graham Blandy' to be approximately (< 1 inch).

Buxus Sempervirens 'Graham Blandy' (American Boxwood) Complete Care Guide | Big Boy plants (3)

Attract, tolerate and resist

American boxwood is known for its tolerance of drought and animals such as rabbits and deer, so if these conditions occur, don't worry, your Buxus Sempervirens 'Graham Blandy' will be fine.


Do you have any garden recommendations for your American Boxwood? Is it used in the garden? Here's how you can make the most of your new factory.

Most owners of Buxus Sempervirens 'Graham Blandy' agree that this shrub looks great in most cottage, modern and Mediterranean gardens of all types.

Other owners find that they complement most Mediterranean gardens, town and patios, formal gardens and modern garden-style gardens.

In particular, the best place for American boxwood in your garden is patios and containers, beds and borders, in small gardens others use it for specimens, privacy screens, containers, borders, hedges, mass planting or landscape trimming.

companion plants

American boxwood grows well with several other plants. A great companion plant is the cotoneaster, which pairs well with your leafy friends.

Others think a good Berberis will work just as well, so choose what you think works best for you!

in conclusion

That's it! These are the main plant care requirements you need to keep in mind in order to grow a healthy American Boxwood in your garden or home.

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