The Complete Guide for Bennerup Blue Siberian Iris (Iris Sibirica ‘Bennerup Blue’) Care


The Bennerup Blue Siberian Iris, otherwise known as the Iris Sibirica ‘Bennerup Blue’ or Siberian Iris ‘Blueberry Fair’, Siberian Flag ‘Blueberry Fair’, is a rather well known perennial plant by gardening enthusiasts around the world.

Best known for its low maintenance and fast growth, this perennial 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.

Fortunately, this is exactly what we’ll cover in this Bennerup Blue Siberian Iris Care Guide. So let’s dive in.

In order to take proper care of your Bennerup Blue Siberian Iris you’ll need to keep in mind the following guidelines:

  • Water: The Bennerup Blue Siberian Iris prefers constant watering each week and more during the hot season.
  • Light: Keep your Iris Sibirica ‘Bennerup Blue’ in an environment where it can receive full sun on a daily basis. 
  • Soil: Make sure to keep the Bennerup Blue Siberian Iris in soil with moist but 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 Bennerup Blue Siberian Iris this is no exception. With these three elements, your leafy friend will live healthy and happy.

Bennerup Blue Siberian Iris plants

Scientific / Botanical Aspects

In botanical terms, the Bennerup Blue Siberian Iris belongs to the Iridaceae family, the genus Iris and the species Sibirica, hence its scientific (or botanical) name Iris Sibirica ‘Bennerup Blue’ (EYE-riss si-BIR-i-ka).

As with other Iris’s, the Bennerup Blue Siberian Iris is a herbaceous plant, which means it will die back to the ground every year. 

Growing Region

The Bennerup Blue Siberian Iris is a plant native to the Central and Eastern Europe.

You might be wondering why your Bennerup Blue Siberian Iris’s native region is important. Well, if you know where your plant originally came from, you’ll know which environment conditions it prefers, and with it, knowledge on how to replicate it at home.

With this in mind, the Iris Sibirica ‘Bennerup Blue’ will be most used to the heat zones in the 1 – 9 region, and in climate zones that range between 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23.

Growth and Size

Growth

In terms of size and growth, the Bennerup Blue Siberian Iris is a relatively fast grower, which makes things tricky for any plant enthusiast.

Size

But, how big does the Bennerup Blue Siberian Iris actually get? What should you expect in terms of size? Let’s dive right in…

The Iris Sibirica ‘Bennerup Blue’ can grow up to 2′ – 3′ (60cm – 90cm) in 2′ – 3′ (60cm – 90cm) and 1′ – 2′ (30cm – 60cm) in 1′ – 2′ (30cm – 60cm). 

These dimensions make the Bennerup Blue Siberian Iris a relatively medium perennial 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.

This is why experts recommend keeping an area of approximately 18″ – 24″ (45cm – 60cm) free so the Bennerup Blue Siberian Iris can spread to its best extent.

Water

In terms of watering, the Bennerup Blue Siberian Iris 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 Iris Sibirica ‘Bennerup Blue’ 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. 

Bennerup Blue Siberian Iris care

Watering

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

In our experience, the famous ‘thumb’ or ‘finger’ test is what works best for the Bennerup Blue Siberian Iris 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

The Bennerup Blue Siberian Iris’s ideal soil potting mix is made out of clay, loam, chalk, and sand.

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

Light and Exposure

In terms of light & exposure, the Bennerup Blue Siberian Iris requires full sun in order for it to thrive under the right conditions. 

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

Specifically, we recommend that you place your Iris Sibirica ‘Bennerup Blue’ in 

Season

Being a herbaceous plant, the Bennerup Blue Siberian Iris will die back to the ground every year. 

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

Flowers

In particular, this perennial is well known for its flowers for cutting and showy flowers around the plant enthusiast community.

The Bennerup Blue Siberian Iris produces some beautiful blue, or purple/lavender, blue and white flowers around this time of year.

Foliage

The leaves from the Bennerup Blue Siberian Iris have a beautiful green color during most of the year.

Bennerup Blue Siberian Iris up close

Attracts, Tolerance and Resistance

The Bennerup Blue Siberian Iris is well known for being able to attract butterflies, so keep that in mind when choosing your plant, as you’ll likely end up finding one or another in your garden.

Additionally, it has a special tolerance for wet soil, clay soil, drought and animals like rabbit and deer, so don’t worry if any of these come along, your Iris Sibirica ‘Bennerup Blue’ will be fine.

Garden

Now, let’s talk garden and how your Bennerup Blue Siberian Iris will look best in it.

Most Iris Sibirica ‘Bennerup Blue’ owners agree that this perennial will look great in most cottage, asian/zen contemporary, and rustic gardens of all types. 

Other owners consider that they complement well most gardens of coastal garden, city and courtyard, and in informal and cottage styles. 

In particular, the Bennerup Blue Siberian Iris’s best location within your garden is in beds and borders, and in ponds and streams, others use it for landscaping in a water garden, very wet areas, container, border, cutting garden, mass planting, or a woodland garden.

Companion Plants

Bennerup Blue Siberian Iris’s do well with some other plants beside it. One good companion plant is the Echinacea, which will pair up nicely with your leafy friend.

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

Conclusion

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

Martin Duran

Hey y'all! My name is Martin Duran and I am from Cali, Colombia. Since 2018 I have been learning about plants and how to take care of them. Here's is my journey... “The clearest way into the Universe is through a forest wilderness.” ― John Muir

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