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Guide botanique

Bald cypress.

Taxodium distichum

Prononciation tack-SO-dee-um dis-TICK-um

Aussi appelée Bald Cypress, Bald Cypress, Swamp Cypress, White Cypress, Tidewater Red Cypress, Gulf Cypress, Red Cypress, Baldcypress, Louisiana-cypress, Marsh-cypress, Swamp Cypress, bald-cypress, swamp-cypress

baldcypress
Photo de William J. Deml (CC BY) via iNaturalist

The bald cypress is a majestic deciduous conifer known for its ability to thrive in wet, swampy soils. It develops a unique, conical shape and often produces woody projections called knees when growing in water. This tree is a fantastic choice for large landscapes with moist areas.

En un coup d'œil

Care level
Easy
Plant type
Conifer
Light
Full sun
Indoor light
direct
Water
Every 1 to 7 days
Mature size
20 to 35 meters
Growth rate
medium
Hardiness
USDA 4 to 10
Bloom time
Early spring

Entretien

Ensure the soil remains consistently moist as this tree prefers wet conditions. Watch for yellowing needles which may indicate a need for more water or specific soil nutrients. Pruning is rarely needed unless you want to remove dead or damaged branches.

Watering
Keep the soil consistently moist or even saturated.
Feeding
Apply a balanced fertilizer in early spring if growth appears slow.
Pruning
Prune during the dormant winter season to remove dead wood.
Repotting
Repot only if grown in a container, though it is best suited for the ground.
Soil
Wet, acidic, sandy, or clay soils
Soil pH
Acidic to neutral
Temperature
-30 to 35°C
Humidity
50 to 90%
Drought tolerance
low
Lifespan
Perennial, often living for several centuries.
Deer and rabbits
moderate

Signes qu'il faut rempoter

  • Roots growing out of the drainage holes.
  • Water running straight through the pot without soaking in.
  • The tree looking stunted despite regular watering.

Sécurité

People
There is no significant toxicity to humans, though the resin can be sticky and irritating to sensitive skin.
Children
The small, woody cones could pose a choking hazard if swallowed by small children.
Contact allergens
The resin may cause mild skin irritation in some individuals.
Airborne allergens
The pollen can be a moderate allergen for those sensitive to tree pollen during the spring.
Edibility
The cones and foliage are not considered edible and may cause digestive upset if ingested.

Comment l'identifier

  • Deciduous needles turn bronze in autumn
  • Fibrous, reddish brown peeling bark
  • Conical growth habit when young
  • Woody knees emerge from root system
  • Small, round, woody seed cones
Height
15 to 35m
Spread
6 to 12m
Leaves
green, bronze, deciduous
Flowers
yellow, green, 0.5 to 1cm
Fruit
brown, Autumn

Problèmes courants

  • Cypress twig gall Small galls form on the twigs due to midge activity, though they rarely harm the tree's overall health.
  • Cypress tip moth Larvae tunnel into the tips of branches, causing them to brown and die back.

La cultiver

Propagation
seed
When to plant
spring, autumn
Overwintering
No special care is needed as it is fully hardy and naturally sheds its needles to survive the winter.
In containers
It is generally too large for long term container growth, though young specimens can be kept in large tubs for a few years.

Seed propagation

  1. Collect mature cones in the fall.
  2. Dry the cones until they release their seeds.
  3. Soak the seeds in water for a few days to mimic wetland conditions.
  4. Sow the seeds in a moist, sandy potting mix.
  5. Keep the soil consistently wet until germination occurs.

Group this tree with other moisture loving plants to create a cohesive and healthy wetland garden bed.

Bonnes associations

  • Buttonbush They share a love for moist soil and provide excellent habitat for local wildlife.
  • River Birch This tree enjoys similar wet conditions and offers a nice contrast in bark texture.

À éloigner de

  • Drought tolerant shrubs Plants that require dry soil will struggle and likely rot when planted in the moist conditions this tree prefers.

Espèces similaires

  • Dawn Redwood It is another deciduous conifer that looks very similar but lacks the iconic knees.

Science

Family
Cupressaceae
Genus
Taxodium
Order
Pinales
Class
Pinopsida
Native range
Southeastern United States, primarily in wetlands and along riverbanks.
Conservation
It is not currently considered threatened, but wild populations are managed to protect wetland habitats.

It thrives in saturated soils by developing specialized root structures that help it anchor in mud and exchange gases.

Value to wildlife
nesting site, cover for waterfowl
Pollinators
bees
Uses
ornamental specimen, wetland restoration, timber production

Au fil des saisons

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Flowering
Fruiting
Foliage

Repères écologiques

Salinity
2/9
Soil reaction
5/9
Light
7/9
Temperature
6/9
Moisture
9/9
Nutrients
5/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Do I need a swamp to grow this?
Not at all, it actually grows quite well in average garden soil as long as it gets enough water.
Why are my needles turning brown in the fall?
That is perfectly normal behavior for this deciduous conifer.

D'où vient le nom

The name Taxodium comes from the Greek word for yew, while distichum refers to the two ranked arrangement of its needles.

Bon à savoir

  • It is famous for developing woody projections called knees that emerge from the roots.
  • The wood is exceptionally rot resistant and was historically used for shingles and boat building.
  • It can live for over 500 years in ideal conditions.

Ton bald cypress a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

Télécharger l'appli

Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.