Jerusalem Cross: sow, plant, divide, nurture

Jerusalem Cross: sow, plant, divide, nurture

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Highly vibrant flowers!

Inflorescences in umbels, fixed to high stems, the Jerusalmen cross forms tufts in volume thanks to lanceolate foliage, a very beautiful green, dense and warm, which even more highlights its flowers. The Jerusalem Cross is a perennial and very hardy plant, very easy to grow, which flowers from June to September and that a few cuts of pruning shears are sufficient for maintenance, to remove faded flowers and completely cut back the plant after the flowering.
This Jerusalem cross is also called by its botanical name, Lychnis Chalcedonica or "Croix-de-Malte" and she was very present in the gardens of our pastors ...

Botanical name:

Lychnis Chalcedonica

Plant type:

Family : Caryophyllaceae - Caryophyllaceae
• Cycle: perennial
• Hardiness: hardy (-28 ° C)
Foliage : obsolete
Exposure : Sun
Ground : rich and fresh
• Harbor : upright stems and tufted foliage
• Rooting: roots
• Origin: Asia
• Toxicity: no


• Cold resistance: -28 ° C
Flowering : June to August
Interview : Very easy to grow
Height: 1 to 1.4 meters
• Edible: no
• Colors:
red (type species), white, pink, salmon

Soil type:

• Any type of rich and always cool soil

When to sow the cross of Jerusalem?

• Sow the Lychnis Chalcedonica either in March April, either September.

How to sow the cross of Jerusalem?

Early sowing, under shelter in February: sow in pots filled with planting soil, the Jerusalem cross seeds must be placed on the surface, without covering them with soil. keep the earth cool.
Spring sowing, from April: sow in the ground. Loosen the soil and amend it with planting soil and an addition of mature compost. Sow the seeds on the surface and keep the soil moist.
Fall sowing, in September, in a bucket.

When to plant the cross of Jerusalem?

• In April - May

How to plant it?

Prepare the ground:

• Loosen the soil, half the height of a spade, about 15-20 centimeters deep.
• Amend the soil with 1/3 potting soil, 1/3 compost and 1/3% garden soil to get the planting off to a good start.
• Mix well to obtain a homogeneous mixture.

Setting up the plant in a container:

• Make a suitable for the size of the container.
• Scratch around the mound of the Jerusalem cross without damaging the roots and soak it in a bucket of water
• Place the root ball and fill in the gaps.
• Tamp with your foot.
• Water.

When to divide the Crosses of Jerusalem?

• You can practice the division in the spring, in April.
• Practice division on a plant of Lychnis Chalcedonica already well established, well developed
• Once the root ball has been separated ...
• Transplant quickly to ensure good recovery.

Flowering period:

• The Jerusalem cross blooms generously from May-June until the month of September.


• Watering: soil always fresh.
• Cast off stems wilted at the base.

Some varieties:

• Lychnis Chalcedonica “Dusky Salmon”: the highest about 1.4m, single flowers in flattened inflorescence of bright pink-salmon color.
• Lychnis Chalcedonica “Alba”:
variety with simple white flowers.
• Lychnis Chalcedonica “Alba plana”: variety with double white flowers.
• Lychnis Chalcedonica “Rosea”: with single pink flowers
• Lychnis Chalcedonica “Mangenrot”: double pink flowers.

Agrees with

• Perennial geraniums, top garden phloxes, hollyhocks

With or without a garden ...

ATa garden: In a bed, in a separation hedge, in the vegetable garden in flower growing.
without garden : in a deep pot, in a mixture of geranium and compost soil.

We recap: the spurge in the ornamental garden:

• Cycle: perennial
• Hardiness: hardy (-18 ° C)
• Foliage: lapsed
• Flowering: May-June-September
• Color : Red, salmon orange, white, pink
• Type of soil: rich and always fresh
• Sowing: from February to March under shelter, in April and September in the ground.
• Plantation: April May and September.
• Interview : cut off faded flowers at the base, cut back after flowering, watering.
• Use : massive, solo, border, flower bed, hedge ...


Soil and Watering

Foot size (WxH)

between the feet


Rich and fresh

Up to 0.8 to 1.40 m

50 cm

Planting depth

Planting period

flowering period

at the collar

April, May and September

June to September


Garden Coquelourde (Lychnis coronaria)
1 m. Very silvery and downy foliage forming a basal tuft of branched and leafy stems, bearing very bright carmine pink flowers from May to August.
"Alba", with white flowers.

Jerusalem Cross (Lychnis chalcedonica)
1 m. Upright tuft with elongated and opposite leaves on fairly stiff stems. Small vermilion red flowers, in flattened inflorescences, from May to August.

  • ‘Morgenrot’, 1.20 m, with salmon pink flowers.
  • ‘Rauhreif’, 1.20 m, with white flowers.

Lychnis x haageana
40 cm. Clear green foliage. Orange-red or vermilion flowers, grouped by 2 or 3, from June to September.

Jupiter's Carnation Lychnis flos-jovis
60 cm. Downy, silvery foliage in a basal tuft. Large bright pink flowers, from May to July.

Species and varieties of leonotis

Lion's mane, lion's tail, wild dagga (Leonotis leonurus, syn. Phlomis leonorus)

  • Vegetation: Up to 5В m high in its original area. Shrubby perennial of 1.50В m with us unless it is treated as an annual.
  • Flowering: Whorls of tubular and hairy flowers bright orange, from July-August to frosts.
  • Qualities: Rapid growth. Exceptional flowering. Tolerates up to -12В В ° C.

Leonotis leonurus 'Harrismith White'

  • Vegetation: --
  • Flowering: White flowers.
  • Qualities: Rather rare cultivar.

Lion's tail with nepet leaves (Leonotis nepetaefolia, syn. Phlomis nepetaefolia)

  • Vegetation: Perennial cultivated as an annual of 1В m in all directions. Leaves petiolate, oval. Embossed blade with serrated and wavy edges, clear green.
  • Flowering: Flowers in a light orange whorl with clementine reflections, from late spring or late summer-autumn.
  • Qualities: Plant grown as an annual. Massive or pot. Flowers and leaves are said to be poisonous.

Harvesting Jerusalem artichoke

Properly maintained, cultivating Jerusalem artichoke can give a harvest of about 3 kg / m2.

It takes place from flowering and throughout the winter according to your needs.

Tear off the tubers by lifting them with a fork for example.

Leave the Jerusalem artichoke tubers that you don’t need in the ground because this is wherethey keep the best.

Once out of the ground, it is best to clean your Jerusalem artichokes with a brush in order to remove all the soil.

This improves the storage conditions removing all traces ofhumidity because there is a risk of developing diseases.

  • The best place to store Jerusalem artichokes is in a cool, dark, dry room.


Phlomis (Credit: Drew Avery / CC BY 2.0 / Flickr)

The Phlomis is a vigorous shrub belonging to a family of sage. Aromatic and decorative plant, it is resistant to both drought and cold. It is to be reserved for dry and sunny corners of the garden.

Guides, letter models, practical sheets. We leave the card to you. Make your choice !

The Phlomis is a vigorous shrub belonging to a family of sage. Aromatic and decorative plant, it is resistant to both drought and cold. It is to be reserved for dry and sunny corners of the garden.

Phlomis (Credit: Drew Avery / CC BY 2.0 / Flickr)

Shrub в – ¶ Flowering shrub

Ornamental plant в – ¶ Decorative foliage plant

Vegetation Perennial : Plant that lives more than two years.
Annual : Plant that lives less than a year.
Biennial : Plant whose life cycle lasts two years. In the first year, the plant grows in the second year, it gives flowers and fruits, then it dies.
To know more

Foliage Persistent : The foliage lasts all year.
Semi-persistent or semi-deciduous : The plant retains part of its foliage all year round.
Lapsed : The plant loses its leaves in the fall.
To know more

Height at maturity Mature height is the height to which the plant naturally rises when it is in the most favorable conditions.
It may take time for the plant to reach this height, depending on the speed of its growth.
The plant may also never reach its height at maturity, if it is pruned regularly, or if it is not cultivated in the optimal conditions for its growth.
To know more

Interview Easy : The plant does not require special care, or very simple care.
Moderate : The plant requires regular care or a little gardening practice.
Difficult : The plant requires important care and gardening skills.
To know more

Water requirement The water requirement of a plant can be supplied by rain, natural soil moisture or watering. To estimate the necessary watering, it is also necessary to take into account the ambient temperature, because of the evaporation, and the capacity of the soil to retain water.
Low : For a houseplant, water monthly. For an outdoor plant, it tolerates drought well.
Way : For a houseplant, water weekly or every two weeks. For an outdoor plant, it will need water supplies before the soil dries up.
Important : For a houseplant, water several times a week. For an outdoor plant, it needs abundant and regular water supplies.
To know more

Growth Slow : The plant reaches maturity in several decades.
Normal : The plant reaches maturity in a few years.
Fast : The plant reaches maturity in a few months.
To know more

Multiplication Propagation involves creating a new plant yourself.
Sowing : The plant reproduces by planting seeds.
To know more
Division : Part of the root (rhizome, tuber) is used to create new shoots.
To know more
Cuttings : A branch is planted in the ground, where it produces new roots.
To know more
Layering : The branch is not cut from the plant, but it is partly buried in the earth, where it develops its own roots.
To know more
Graft : A plant fragment is implanted on another plant.
To know more
Impossible : It is not possible, for an individual, to multiply his plant. If he wants another, he must buy it from a professional.

Cold resistance Resistant (rustic) : Frost resistant plant.
To protect (semi-rustic) : Plant which supports the freshness but which requires a protection against the frost.
To return (fragile) : Plant which fears the cold and which must be sheltered during the cold season.
To know more

Soil type Clay soil : Heavy and sticky soil when wet, which hardens and cracks when drying.
Limestone soil : Clear and chalky earth, dry in summer and muddy in winter.
Sandy soil : Light soil, easy to work with and which retains water poorly.
Stony ground : Soil loaded with pebbles and poor in organic matter.
Humidor : Black and easy to work, it looks like forest earth.
Heather land : Acidic soil (pHВ 4 Г 5), sandy and rich in humus.
Potting soil : It's easy, this land can be bought in stores!
To know more

Soil pH The pH measures acidity of the soil.
Alkaline soil : The pH is above 7. These are mainly calcareous soils.
Neutral soil : The pH is between 6.5 and 7.2. Most plants grow well there.
Acidic soil : The pH is below 7. This is mainly heather land.
To know more

Soil moisture Soil moisture does not depend on rain, but on how the soil retains water or not.
Drained soil : Fresh soil but where water does not stagnate.
Wet ground : Soil where water stagnates.
Dry soil : Soil that does not retain water.
Fresh soil : Soil which remains constantly moist (but not soaked). To know more

Exposure Sun : The plant should have direct sun all day. Inside, it is directly (less than 1m) in front of a window facing south or west.
Part shade : The plant should have sun only part of the day. Indoors, it is in front of a window to the east or further away from a window facing south or west.
Shadow : The plant should be in the shade of other plants. Indoors, this is the case for rooms in winter, windows to the north or partially obscured and when the plant is far from the window (+ 2 m).
To know more

Planting Full earth : The plant can be planted directly in the earth.
Bin, pot or planter : The plant can be planted in a container. (The volume of the container must be adapted to the size of the plant.)
To know more

OCT. NOV. From C.

OCT. NOV. From C.

OCT. NOV. From C.

The Phlomis is a herbaceous plant belonging to the family Lamiaceae, the same family as sage. Its natural habitat is in the mountains of Turkey, Mediterranean basin, Asia.

This genus consists of a hundred kinds of perennials. They are aromatic, decorative plants with greyish foliage, a sign of resistance to drought. Nicknamed В "В Sages of JerusalemВ В", the Phlomis is used as an ornamental flowering plant.

In the garden, it has the shape of a vigorous bush with thick foliage Made up of medium leaves, simple opposites. Bushy, it is of a height equal to its wingspan, an average of 1.50В mВ Г — В 1.50В m.

From June to September it produces abundant flowering offering many colors depending on the species: white, yellow from the lightest to the most intense, pink, mauve, purple. The variations of yellow are the most numerous. The flowers are grouped in tagged rings on very straight angular stems.

This shrub has a Uncommon resistance to drought both on the ground and in the air. The presence of root hairs on the leaves limits vapotranspiration and increases resistance to dryness of the air. The Phlomis Withstand negative temperatures varying, depending on the species, from -15В to -25В В ° C.

Cultivation and maintenance of comfrey

Caring for comfrey is very easy:

  • Water in hot weather, especially during the first 2B years. Subsequently, the roots of comfrey will find water on their own in depth.
  • Straw a foot bringing it well decomposed compost in autumn.

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