The Raspberry Splash Lungwort, otherwise known as the Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 or Lungwort ‘Raspberry Splash’, Raspberry Splash Lungwort, Bethlehem Sage ‘Raspberry Splash’, Raspberry Splash Bethlehem Sage, is a rather well known perennial plant by gardening enthusiasts around the world.
Best known for its low maintenance and moderate growth, this perennial will likely liven up your house (or garden) with its multicolored colored leaves. But, only if you learn how to take proper care of it for it to thrive.
Fortunately, taking care of your Raspberry Splash Lungwort is not too difficult – as long as you follow our guidelines in this Raspberry Splash Lungwort Care Guide. Now let’s get started.
The basic care guidelines you need to remember for your Raspberry Splash Lungwort are the following:
- Water: The Raspberry Splash Lungwort grows best with regular watering to keep the soil moist during the dry season. Reduce watering once the plant is established.
- Light: Keep your Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 in an environment where it can receive full to partial shade on a daily basis.
- Soil: Make sure to keep the Raspberry Splash Lungwort in soil with moist but well-draining properties, so ideally, one that is made of loam, chalk, and clay.
And as with many other plants, these are the only three care factors you need to remember to make sure your Raspberry Splash Lungwort is, for the most part, healthy and well to survive.

Scientific / Botanical Aspects
In botanical terms, the Raspberry Splash Lungwort belongs to the Roseaceae family, the genus Prunus and the species Subhirtella, hence its scientific (or botanical) name Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 (pul-muh-NARE-ee-ah).
As with other Prunus’s, the Raspberry Splash Lungwort is a herbaceous plant, which means it will die back to the ground every year.
Growing Region
The Raspberry Splash Lungwort is a plant native to the Japan.
You might be wondering why your Raspberry Splash Lungwort’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 Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 will be most used to the heat zones in the 5 – 8 region, as the plant hardiness level falls between 4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8b, 8a and the ideal climate zone is between 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17.
Growth and Size
Growth
In terms of size and growth, the Raspberry Splash Lungwort is a relatively moderate grower, which makes things somewhat easy for any plant enthusiast.
Size
But, what size of Raspberry Splash Lungwort are we talking about? What can you expect in terms of height, spread and spacing? Let’s dig in…
The Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 can grow up to 10″ – 1′ (25cm – 30cm) in 10″ – 1′ (25cm – 30cm) and 1′ – 2′ (30cm – 60cm) in 1′ – 2′ (30cm – 60cm).
These dimensions make the Raspberry Splash Lungwort 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 16″ – 24″ (40cm – 60cm) free so the Raspberry Splash Lungwort can spread to its best extent.
Water
In terms of watering, the Raspberry Splash Lungwort is a fairly complicated plant to take care of.
This is mostly because it has a not so straightforward watering schedule and somewhat regular watering needs.
Specifically, most experts agree that the Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 grows best with regular watering to keep the soil moist during the dry season. Reduce watering once the plant is established.
Which is why it is considered a plant with relatively average needs in terms of water.

Watering
As a rule of thumb, you should remember to keep your Raspberry Splash Lungwort in soil with moist but 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, and moist properties to keep the right moisture levels at all times.
But, if you want a ‘one-size-fits-all’ solution to watering your Raspberry Splash Lungwort then you should consider the famous ‘finger’ test. To perform this test, you just need to put your finger in your plant’s soil and determine if it’s moist or not. If it is, then don’t water; if it isn’t, then please do. In any case, this test will allow you to know if your Raspberry Splash Lungwort needs or does not need water, every time.
Soil Mix
As mentioned earlier, the Raspberry Splash Lungwort prefers to have soil with good drainage, and moist properties at all times, reason why you need to make the soil mix out of loam, chalk, and clay.
This is why most experts agree that the Raspberry Splash Lungwort requires soil with clay, loam (silt), 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 Raspberry Splash Lungwort requires full to partial shade 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 sun to shade, and it will be able to grow properly.
Specifically, we recommend that you place your Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 in full and direct sun (more than 6 hours of direct sunlight per day).
Season
Being a herbaceous plant, the Raspberry Splash Lungwort will die back to the ground every year.
But, you can expect it to have its ‘prime-time’ during the spring (mid, late).
Flowers
You can expect your Raspberry Splash Lungwort to flower around the spring months from April to June (spring).
In particular, this perennial is well known for its showy flowers around the plant enthusiast community.
The Raspberry Splash Lungwort produces some beautiful purplish-pink, or pink and white flowers around this time of year.
Foliage
The leaves from the Raspberry Splash Lungwort have a beautiful multicolored color during most of the year.
In particular, they have a simple arrangement with a alternate organization in its leaves.
You can expect the leaves from your Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 to be around (1-3 inches) in size.

Attracts, Tolerance and Resistance
The Raspberry Splash Lungwort is well known for being able to attract hummingbirds, 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 animals like rabbit and deer, so don’t worry if any of these come along, your Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 will be fine.
Garden
Now, let’s talk garden and how your Raspberry Splash Lungwort will look best in it.
Most Pulmonaria ‘Raspberry Splash’ Plant Patent #12,138 owners agree that this perennial will look great in most cottage and rustic gardens of all types.
Other owners consider that they complement well most gardens of coastal garden, informal and cottage, city and courtyard, gravel and rock garden, and in prairie and meadow styles.
In particular, the Raspberry Splash Lungwort’s best location within your garden is in beds and borders, ground covers, banks and slopes, edging, and in patio and containers, others use it for landscaping in a edging, border, mass planting, container, ground cover, or a woodland garden.
Companion Plants
Raspberry Splash Lungwort’s do well with some other plants beside it. One good companion plant is the Heuchera, which will pair up nicely with your leafy friend.
Others consider that a nice Aquilegia will work well too, so choose whichever you find works best for you!
Conclusion
So that’s it! These are the main plant care requirements that you need to keep in mind in order to have a healthy Raspberry Splash Lungwort in your garden or home.