Arisema, arisaema - sow, plant, nurture

Arisema, arisaema - sow, plant, nurture

Arisema, arisaema, flower with "cobra's head" or baroque poisonous spathe!

The arisemas are original to say the least. They form large erect calyxes, from which, depending on the variety planted, a fleshy piece appears like a small white or tinted phantom, sometimes it is a more or less visible central spike ... The flowers take on various colors but the more often dull. By discovering it in faraway lands one would readily ask the question of its venomosity ... But in reality, it is not. Nothing to fear !
If the flowers of the arisema are amazing, the palmate foliage is also to its advantage.
Moderately hardy, the arisaema needs protection in winter. It appreciates semi-shaded exposures such as cool soils.

Botanical name:

• Arisaema spp

Plant info:

• Cycle: Perennial
• Foliage: lapsed
• Hardiness: Not very hardy plant (-10 ° C)
• Family: Araceae, araceae
• Harbor : upright flower stalk
• Exhibition: Part shade
• Ground : Humid and fresh
• Sowing: Spring
• Plantation: Spring
• Flowering: Spring and early summer
• Fruiting:
• Rooting: Corm (kind of bulb)
• Cultivation area: See the France or Quebec hardiness map
• Origin: America
• Honey plant:
• Edible plant:
• Poisonous Plant: No

Special features of Arisema:

• The plant uses a corm as a root system
• Original flowering

What advantages in the garden:

• Easy to grow.
• Very rapid growth.
• Superb flowering.
• Many varieties.

What exhibition?

• Partial shade

What soil?

• Arisaema appreciates soils rich in humus and deep

What method of multiplication?

• Division and sowing

When to divide arisema?

• In autumn, when the plant has entered vegetative rest.

How to divide it?

• When the plant is sufficiently established in the garden (2 years)
• Using a spade fork, dig up the root ball.
• Around the main corm (bulb), the plant has developed a network of small corms.
• They are the ones who can be separated but ...
• Only select those that measure more than 2 cm across.
• Once separated, transplant them directly to the garden, at a depth of 10 - 15 cm.
• Protect the plantation with thick mulch, especially in cold regions.

When to sow?

• Seedlings are prepared at the end of summer after harvesting the seeds

How to sow arisema?

• The seeds are used freshly harvested and must stratify during the winter.
• Place them in buckets of sand mixed with potting soil.
• Place them in a cold frame in the fall or, failing that, against a partially sheltered wall.
• After winter, collect the seeds.
• Place them in a pot of well-ripe potting soil and compost.
• Keep moist until rising.
• Usually seeds emerge within 3 months if stratification gives good results.

A word from the amateur gardener:

• Stratification can be done by placing the wet seeds in an airtight bag, in wet sand. The sachet is then placed for at least 2 months in the refrigerator.
• Arseama seeds quickly lose their germination capacity when stored.

When to plant

• In the spring of March or April.

How to plant it?

• Work the soil on a small height of the spade.
• Amend the soil with a mixed compost potting soil if necessary.
• Place the corms about 15 cm deep, 20 cm apart from each other.
• If you are planting a young plant, carefully scrape the edge of the root ball without damaging any small roots that may have developed.
• Recap and tamp.
• Water without gorging.
• Then keep the soil cool.
• Protect with winter mulch after the leaves have disappeared.

Culture in pots?

• Use a pierced earthenware pot 30 or 40 cm wide and 30 cm high.
• Fill it with a thin layer of gravel, then a mixture of potting soil and compost or leaf potting soil.
• Place the plant or one or 2 corms there.
• Water well.
• Then keep the soil cool.
• In winter it will be necessary to protect the plant against the cold by mulching the stump and insulating the contours of the pot.

Caring for the aiseama:

• Regular watering.
• Divide every 3 years.
• Mulch the stump for the winter, even in mild regions.


• Spring and summer flowering from month d‘April until July.


The genus is rich in more than 250 species, tropical and temperate
Arisaema sikokianum, Ar. Elephas, Ar. Robustum

Some cultivated varieties:

• Arisaema Candidissimum: 50 cm high, with white spathes streaked with green and pink.
• Aris. thunbergii
• Aris. thunbergii ssp Urashima ‘Soshin’

Arisema disease:

• No disease, but the corm can suffer from drought.

What to plant with?

• Plant with ferns, wild garlic,

Use :

ATa garden: In semi-shade and shade, in the woods.
• Without garden:
in a large 40 cm terracotta pot on a semi-shaded terrace.

Photo : Arisema, ariseama by Meneerke bloem - picked from - under creative license CC BY-SA 3.0.

Quick sheet:


Item name

Spring flower: do you know Ariséma


The arisemas are original to say the least. They form large erect calyxes, from which, depending on the variety planted, a fleshy piece appears like a small white or tinted phantom, sometimes it is a more or less visible central spike ... The flowers take on various colors. but often...


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Arisaema (Snow Rice-Cake Plant)

ARISAEMA (Snow Rice-Cake Plant) Araceae A. sikokianum

HABITAT: Perennial, native to Japan. Zones 5-9.

HABIT: Tuberous herbaceous perennial blooming in early summer. Waxy 6 "spathes, chocolate-maroon outside green shading to white inside, surrounding a pure white spadix. 12-15" plants composed of 2 to 3 five-parted leaves, sometimes with silver margins.

SEED GERMINATION AND CULTURE: Indoors: Sow in late winter, 8 to 10 weeks prior to planting out in spring after last freeze. Sow seeds in shallow rows and cover to their thickness with grow mix. Bottom water. Germinates in 15 to 30 days with cool nights of 55 ° F and warm 72 ° F days. Keep moist, never allow to dry out. When 4 leaves develop, transplant to 2 1/4 inch pots. After danger of frost, set outdoors in a protected area to harden for 3 days. Then plant in rich, well-drained soil high in organic matter 12 "apart in shade to partial shade. Water well. Where wintersare severe, mulch in fall after hard freeze.

Outdoors: In early spring, while soil is cool, sow seeds in a raised, protected bed cover 4 times their thickness. Keep moist. Thin to avoid crowding. Shift to permanent position in early fall.

INSECTS: Considered hardy and trouble free.

DISEASES: Considered hardy and trouble free.

PROPAGATION: Seeds and offsets.

NOTE: Good companion to Ferns and Primulas.

Arisaema concinnum

Cobra Lily
The spathe is green or purple, vertically striped with white. Very attractive single radiate leaf with up to 13 leaflets

Spathes are produced in May and June. After flowering, in July they produce orange-red berries

Bulb Size: Flowering
Height to 60cm / 24 ”
Plant with the top of the tuber 4-6 ”deep in rich well drained humus rich soil in light or dappled shade

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Jack in the Pulpit Planting Zones, Sun & Soil Requirements, and Care

A jack in the pulpit is a species indigenous to the eastern parts of North America and it can be successfully grown in USDA hardiness zone 4-9.

It is crucial to growing this species in either partial shade or in full shade with adequate amounts of fertilization and watering. This species containing wildflowers do not need well-drained soils (depends on the different types of jack-in-the-pulpit), which is why they can do well in boggy soils. What you can do is mimic the native habitat of the species, which would be creating an acidic, damp area.

If you want to plant your own jack in the pulpit, what you have to do is dig a 6-inch hole on the ground and put the corm in it. As the springtime approaches, the plants peek through the soil and that is when you will need to shovel at least 2 inches of the mulch around it to conserve the moisture. Slugs and other pests like feeding on this wild plant, which is why you will need to be extra caring with this plant.

Arisaema triphyllum

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Arisaema triphyllum (Jack-in-the-Pulpit, Bog onion, Brown dragon, Indian turnip, Wake robin or Wild turnip) is a herbaceous perennial growing from a corm. It is a highly variable species, ranging from green on the spathe to deep purple. Grow it in the humus of rich woods, shaded form the hot sun. The species does poorly in heavy clay soils. Grown from seed, it takes four to five years to flower.

Arisaema triphyllum, commonly called Jack-in-the-pulpit, is a spring woodland wildflower usually growing 1- 2 'tall. The flower structure consists of the spadix (Jack) which is an erect spike containing numerous, tiny, green to purple flowers and the sheath-like spathe (pulpit) which encases the lower part of the spadix and then opens to form a hood extending over the top of the spadix. The outside of the spathe is usually green or purple and the inside is usually striped purple and greenish white, though considerable color variations exist. Two large green, compound, long-petioled leaves (1-1.5 'long), divided into three leaflets each, emanate upward from a single stalk and provide umbrella-like shade to the flower. The fleshy stalk and leaves lend an almost tropical aura to the plant. Flowering plants initially produce only male flowers, but become hermaphroditic as they further age (male flowers on upper part of spadix and female on lower part). Most plants in a colony will vanish by mid-summer (become dormant), but the mature, hermaphroditic flowering plant will produce a cluster of red berries in mid to late summer which becomes visible as the spathe withers. Roots contain calcium oxalate (same chemical as in Diffenbachia or dumb cane) and are poisonous (and a serious throat irritant).

The genus name comes from Greek words aris meaning arum and loved meaning red in reference to the red-blotched leaves found on some individuals.


1 x seed packet containing 10x Arisaema kiushianum seeds.

From Japan, Arisaema kiushianum is a real gem! One of my favorite Arisaema species.

The spathes are held low down below the foliage and close to the ground. Despite this, they are beautifully colored and eye-catching. One of the most remarkable in the Arisaema genus.

Easy to grow, this rewarding plant will increase steadily after a few years. Grow in an airy ’compost. It does well in a pot, although ensure that the tubers are protected from frost. In the ground, they are hardy provided that the drainage is good.

Video: 5 Tips How to Grow a Ton of Onions in One Container or Garden Bed