GILLENIA TRIFOLIATA: Sowing, planting, dividing, maintaining

Gillenia Trifoliata, a rustic perennial, all in lightness ...

Gilliena Trifoliata, long dark red stems bear flowers with red sepals, 5 petals, very pale pink or white, looking fragile and in reality full of lightness, they overhang a rather cut and ribbed foliage. In autumn, after having developed well, the foliage takes on fiery red, ocher hues, a superb effect in the ornamental garden.

We also call her Gillenia 3-leaf spirea, it forms a shrub which can reach 1.20 m very floriferous in June and July.

Botanical name:

• Gillenia trifoliata

Plant info:

• Cycle: Perennial
• Foliage: Lapsed
• Hardiness: Hardy plant (-20 ° C)
• Family: Rosaceae - Rosaceae
• Ports: Bushy with drooping stems
• Exhibition: Sun and partial shade
• Ground : Fresh and humus soil, cool and well drained, non-calcareous
• Sowing: January or February
• Plantation: Spring or fall
• Flowering: June July
• Fruiting:
• Rooting: Rhizomes
• Cultivation area: Zone 7 - See the hardiness map France or Quebec
• Origin: United States
• Honey plant: No
• Edible plant: No
• Poisonous Plant: No


• 3 years are needed for the shrub to reach its adult size.
• 2 varieties of gillenia

What benefits to the garden of gillenia trifoliata:

• Graceful bushy port
• Beautiful summer flowering
• Low maintenance.

What exhibition?

• Sun, partial shade, shade

What soil?

• Cool and humus soil, cool and well drained, rather non-calcareous.

A word from the gardener:

Gillena trifoliata appreciates shade even in the best exposures. The shrub requires cool or even moist soil to thrive. According to its exposure, it will be necessary to practice regular watering.

Method of multiplication?

• Seedlings, division of tufts (rhizome)

When to divide gillenia trifolia

• Divisions can be produced at 2 periods : in spring, March or April or in autumn around October.

How to divide it?

• The multiplication can only be applied to a subject well established in the garden.
• Unlike many divisions where it suffices to cut the stump in 2, as regards gillenia, it is necessary at all costs to practice the division on the periphery of the stump so as not to damage the original foot.
• Clear the stump from the soil by going well under the roots and to the sides of the foot.
• Select an area with a start of vegetation or a young branch and separate with a knife from the rest of the foot. The knife must absolutely be cleaned and disinfected.
• Return the “borrowed” stump directly to the garden or to a pot.

When to sow

• In winter, in January or February.

A word from the amateur gardener:

• Gillenia seeds only germinate at a temperature between 0 and 5 ° C, which is why sowing starts during this winter period.

How to sow gillenia trifoliata

Sowing in a cold frame

• They are simpler because controlled, they will also protect the seedlings from any winter rains.
• Work the soil to loosen it and mix it with compost soil.
• Sow and barely cover the seeds with sowing soil.
• In spring, transplant them in individual pots / pots in a well-decomposed compost garden soil mixture.

A word from the gardener:

Be sure to keep the soil moist throughout the process.

When to plant or transplant leaf spirea

• In spring from March or in autumn, around October.

How to plant it?

• Work the soil on the surface at a spade height.
• Mix it with mature compost.
• Dig wider and deeper than the clods of gillenia trifoliata to add to the garden.
• Place the plant (s) in garden containers, with 50 cm of space between the feet.
• Fill and tamp.
• Water.

A word from the gardener:

Keep the soil moist.

Culture in pots?

While it is true that in a pot you will not find the same benefit as growing gillenia in the ground, it is quite possible to grow it in a large pot.

• Use a large drilled soil container 40 cm deep and 30 or more in diameter.
• Place a draining bottom such as gravel.
• Fill the bin with a mixture of well-matured potting soil and compost.
• Place the gillenia plant.
• Water and keep moist.

Interview :

• Cut off damaged stems.
• Pay attention to the humidity of the soil.


• Flowering from June to September.
Some varieties start flowering earlier.


• Gillenia Trifoliata: The foliage is lightly cut and mat. The flowers sometimes appear slightly pinkish.
• Gillenia Stipula: with more indented foliage and very white flowers.

Disease :

• The bush does not seem to suffer from any diseases.

What to plant with?

• Plant Gillenia in a flower bed, the other flowers will help her to erect her stems and you will get the most out of her magnificent bloom.
• Plant the plant with impatiens, forget-me-nots ...

Use :

ATa garden: In a bed of perennial plants
• Without garden:
In composition of pots of different sizes on a terrace for example.

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We prepare for winter in the vegetable garden very slowly in October. So here is a little guide so you don't forget anything. Once again it is reduced to the strict minimum to simplify and lighten the reading, you will find additional information in the links to the vegetable sheets, in particular if you wish (those which are not yet available, will be soon).

GILLENIA TRIFOLIATA: Sowing, planting, dividing, maintaining

The Gillenia trifoliata (Three-leaf spirea) is a plant species belonging to the Rosaceae family (subfamily of Amygdaloпdes, tribe of Gillйniйes) originating in the United States (central and eastern) to Canada (Ontario).

It takes, like Peony, a few years to settle, but can then remain in the same place for dozens of years.

It is a perennial herbaceous plant with deciduous foliage.

Its height is between 0.80 meter and 1.20 meter.

It grows on a rhizome, its form is erect, branched, and its stems are tinged with red.

Its leaves are imparipinnate, with 3 serrated oval leaflets of bronze green color.

The foliage takes on remarkable red hues in the fall.

Characteristics of the sheet:

  • layout: alternates
  • shape: imparipennial
  • outline: serrated
  • rib: pinnate

The Gillenia trifoliata is a hardy plant (-15 ° C) to be planted in ordinary but not calcareous soil, not too much in the sun.

Be careful, slugs are fond of young shoots.

The Gillenia trifoliata flowers from May to September depending on the climate.

It presents inflorescences in panicles.

The flowers, small, are made of 5 narrow white petals tinged with pink arranged in a star. The chalice is tinted red.

The fruits are terminal follicles grouped by 3 and containing seeds of mahogany color.

Size Ptelea trifoliata

There is an obligation topruning shrubs less than 2 m, necessary to obtain a strong and dense structure. In addition, this allows it to even better withstand strong gusts of wind. Prune between February and April, before vegetation resumes.

For older shrubs, prune dead, isolated or intersecting branches, always with the aim of maintaining a rounded shape.

Warning : the branches, generally multi-stemmed, bear thorns. Be careful when pruning!

The pilobe is propagated very easily by division of tufts in spring or in autumn and by sowing in February or March.

Tufts division

  • Pick up either large pieces of clumps or smaller ones, using a clean, sharp knife.
  • Plant the larger ones directly outside in the chosen location.
  • Plant the smaller ones in a terrine under a cold frame, filled with a mixture of half peat and half sand, in order to promote their recovery.
  • Prepare pots about 8В cm in diameter, filled with a mixture of leaf soil, manure and sand, and then plant the small tufts separately.
  • Once well rooted, transplant the subjects to their final locations.


The seeds of the pilobe are very small and very light, handle them with care because they fly very easily.

  • Prepare seedling boxes or terrines, filled with a mixture of half potting soil, half sand.
  • Sow the seeds on the surface and pack the soil well on top.
  • Moisten lightly and place the boxes or terrines under a cold frame, in the light.
  • Let the plants take root. Remember to moisten delicately and regularly.
  • Prepare pots about 8 В cm in diameter, filled with a mixture of leaf soil, manure and sand.
  • Transplant the young plants into the pots.
  • Then plant them in the ground in the chosen places, during the fall or in April.

Video: The Garden Ghost Eryngium giganteum

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