Purple gromwell Lithodora diffusa 'Heavenly Blue' 5-10 pot P9

Size: Potmaat leidend

5-10cm

|

Pot 9x9 cm (P9)

|

Available from: 03/02/2025

Number of m2

Nr. of plants

3.35

3.35 per piece

incl. VAT, excl. shipping costs (calculated in shopping cart)

Added to shopping cart

Number of m2

Nr. of plants

Added to shopping cart

Bulk discount!

Pcs Save Price/pc

2+ £3.70

6+ -2.7% £3.60

12+ -5.4% £3.50

24+ -8.1% £3.40

96+ -9.5% £3.35

Benefits according to our specialist

Attracts bees
Plantable year-round
Rich flowering

Plant features
Description
Planting and care
Packaging and shipping

Genus
Lithodora (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
May, June, July, August

Leaf colour
Blue

Possibilities
Border, Group planting, Planter, Pot, Edge planting

Soil type
All soil types, well-drained

Positioning
Sun

Winter hardiness
-15,0°C / -9,4°C, USDA zone 7b/8a

Fruit-bearing plants
No

Water needs
Average water

Number of plants per m²
9

Evergreen plants
Yes

Leaf colour
Green

Fragrant plants
No

Growth habit
Creeping wide-spreading growth habit

Height at time of delivery excluding pot/clod
5-10

Mature height (cm)
15

Art. no.
1000746

Description

Lithodora diffusa 'Heavenly Blue' | Purple gromwell

Lithodora diffusa 'Heavenly Blue', commonly known as purple gromwell, is a delightful evergreen plant that brings a swath of vivid color to any garden. Perfect for softening edges or filling in spaces with a sea of cobalt blue, this plant is a favorite among gardeners seeking a hardy groundcover with a long blooming period.

Key Features

Lithodora is an evergreen perennial, maintaining a lush green appearance throughout all seasons.
The 'Heavenly Blue' cultivar is particularly treasured for its intense blue flowers that bloom from late spring through summer, adding a striking splash of color to your garden for an extended period.
With its low, spreading habit, Lithodora diffusa 'Heavenly Blue' is an ideal choice for borders, group plantings, and edge plantings, as well as for adding ornamental value to pots and planters.
The plant thrives best in full sun locations and requires well-drained soil to prosper.
Its foliage remains green year-round, which provides a beautiful contrast to the vibrant blue flowers during the blooming months.

Tips

To ensure the best growth and flower production, place Lithodora diffusa 'Heavenly Blue' in a location where it will receive ample sunlight.
While this plant does not demand high maintenance, it does appreciate average watering to keep the soil moist but not waterlogged.
There is no need for regular pruning, but occasional tidying of unsightly shoots will help maintain the aesthetic appeal of your plant.
For propagation, semi-ripe cuttings can be taken during the growing season to create new plants that will carry the same stunning characteristics as the parent.
Although drought-resistant varieties are available, 'Heavenly Blue' does not fall into this category, so be mindful during prolonged dry spells to keep your plant hydrated and healthy.

Ideal placement of a Lithodora diffusa 'Heavenly Blue'

Lithodora diffusa 'Heavenly Blue' flourishes best in full sun, which ensures optimal flowering and the most vibrant blue hues from its blossoms. This evergreen species requires a well-drained substrate to thrive, avoiding waterlogged conditions that could be detrimental to its health. It is well-suited for a variety of garden applications, including borders, group plantings, and as a charming edge plant. Additionally, its compact growth and striking color make it an excellent choice for container gardening, adding a touch of perennial beauty to patios and balconies.

How do I plant a Lithodora diffusa 'Heavenly Blue'?

To ensure successful establishment, Lithodora diffusa 'Heavenly Blue' should be planted in well-drained soil, which is crucial for its overall health. It thrives best in full sunlight, enhancing its vibrant blue flowering potential from May through August. When positioning this plant, particularly if integrating into borders or as ground cover, space adequately to accommodate its creeping growth habit. The evergreen foliage will persist year-round, offering a consistent green backdrop for the striking blue blooms. After planting, water moderately to encourage root development, keeping in mind its average water requirement as it settles into its new environment.

Pruning a Lithodora diffusa 'Heavenly Blue'

Pruning of Lithodora diffusa 'Heavenly Blue' is seldom necessary due to its well-behaved, creeping growth habit. Should you wish to refine its shape or remove any unsightly shoots, the best time to do so is after the flowering season, which concludes in late summer. Trimming back these shoots can encourage a denser foliage and maintain the plant's aesthetic appeal within its designated space. It is important to perform any such maintenance with a gentle hand to preserve the evergreen foliage that remains vibrant throughout the year.

Watering a Lithodora diffusa 'Heavenly Blue'

To maintain the vigor of Lithodora diffusa 'Heavenly Blue', ensure it receives consistent moisture, particularly during its blooming period from May through August. While the plant has an average water need, it is essential to avoid waterlogging to prevent root issues. Regular watering will support its lush, evergreen foliage and the production of vibrant blue flowers. During particularly dry spells, supplement natural rainfall with additional irrigation to keep the soil evenly moist, encouraging healthy growth and resilience in less than ideal conditions.

Fertilising a Lithodora diffusa 'Heavenly Blue'

To maintain the vibrant blue blossoms and lush green foliage of Lithodora diffusa 'Heavenly Blue', adequate fertilization is key. This evergreen species thrives with a slow-release fertilizer applied in early spring, as new growth begins. A balanced fertilizer, designed for acid-loving plants, is ideal to encourage profuse flowering and healthy, vigorous growth throughout the flowering months.

As this plant has a creeping growth habit, ensure the fertilizer is spread evenly around the base, avoiding direct contact with the foliage or stems to prevent burn. Water the area well after application to help the nutrients penetrate the soil and reach the roots. A second application may be beneficial in mid-summer to sustain the plant's needs during its peak growing season.

The characteristics of a Lithodora diffusa 'Heavenly Blue'

An often overlooked virtue of Lithodora diffusa 'Heavenly Blue' is its remarkable ability to thrive in poor, well-drained soils, where other plants may struggle. Its vibrant azure blooms create a stunning ground cover that elegantly cascades over rockeries or garden edges. For those seeking a low-maintenance addition, this species rewards with a profusion of color without the need for frequent fertilization, exemplifying resilience and beauty in one package.

What will be the height of Lithodora diffusa 'Heavenly Blue'?

Lithodora diffusa 'Heavenly Blue' typically reaches a height ranging from 10 to 50 centimeters when fully mature.

What will be the width of Lithodora diffusa 'Heavenly Blue'?

Lithodora diffusa 'Heavenly Blue' has a final spread ranging from 10 centimeters to 50 centimeters.

Which soil type is most suitable for the Lithodora diffusa 'Heavenly Blue'?

Lithodora diffusa 'Heavenly Blue' is adaptable to various soil types, but it thrives best in well-drained soil. Ensuring proper drainage is crucial for the healthy growth and vibrant appearance of this plant.

What is the ideal positioning for the Lithodora diffusa 'Heavenly Blue'?

The ideal location for Lithodora diffusa 'Heavenly Blue' is a sunny spot. This plant thrives best when it receives ample sunlight, which promotes healthy growth and vibrant blooming.

What is the flowering colour of the Lithodora diffusa 'Heavenly Blue'?

The blossoms of Lithodora diffusa 'Heavenly Blue' display a captivating blue hue. This striking coloration adds a delightful touch to the overall aesthetic of the plant.

Is the Lithodora diffusa 'Heavenly Blue' hardy?

Certainly, Lithodora diffusa 'Heavenly Blue' is considered to be winter hardy. It can endure temperatures as low as -15.0°C to -9.4°C, placing it within the USDA hardiness zones 7b to 8a. This indicates that the plant is well-suited to survive the winter in regions falling within these specified zones.

Is the Lithodora diffusa 'Heavenly Blue' evergreen?

Certainly, Lithodora diffusa 'Heavenly Blue' is an evergreen plant. This means that it maintains its lush green foliage throughout the year, offering an enduring touch of natural beauty to your garden or landscape.

What is the growth strength of the Lithodora diffusa 'Heavenly Blue'?

Lithodora diffusa 'Heavenly Blue' demonstrates a relatively swift growth pattern, typically reaching its ultimate height within a period of two to five years. This indicates its capability to establish and develop steadily within a moderate timeframe.

0203 455 22 48

Send an e-mail
[email protected]

Personal advice from
our specialists? We are happy to help you!