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Guide botanique

Marigold.

Tagetes L.

Prononciation TAH-geh-teez EH-rek-tuh

Mexican Marigold
Photo de lisong (CC BY-SA) via iNaturalist

Marigolds are cheerful, hardy annuals known for their bright, sunny blooms and distinctive scent. They are incredibly easy to grow and provide a long season of color in gardens and containers.

En un coup d'œil

Care level
Easy
Plant type
Annual flowering plant
Light
Full sun
Indoor light
direct
Water
Every 3 to 7 days
Mature size
Up to 3 feet tall and 2 feet wide
Growth rate
fast
Hardiness
USDA 2 to 11
Bloom time
Late spring through fall

Entretien

Plant in well-draining soil and provide full sun for best results. Deadhead spent blooms regularly to encourage continuous flowering. They are relatively drought-tolerant once established but perform best with consistent moisture.

Watering
Water when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot.
Feeding
Fertilize every 3-4 weeks with a balanced liquid fertilizer, or use a slow-release fertilizer at planting time.
Pruning
Pinch back young plants to encourage bushier growth. Deadhead spent flowers regularly to promote more blooms.
Repotting
Annuals, typically grown from seed or transplanted as young plants; repotting is usually not necessary.
Soil
Well-draining, average garden soil
Soil pH
Slightly acidic to neutral (6.0-7.0)
Temperature
18 to 32°C
Humidity
30 to 60%

Sécurité

People
Petals are edible in moderation, but may cause stomach upset if consumed in large quantities.
Pets
Non-toxic to pets.
Edibility
While some marigold varieties are considered edible, it's best to confirm the specific variety and source before consumption. Petals can be used as a garnish or in salads.

Comment l'identifier

  • Brightly colored, daisy-like flowers
  • Frilly or ruffled petals
  • Finely divided, aromatic foliage
  • Varying flower forms (single, double)
  • Distinct, pungent fragrance
Height
0.15 to 0.9m
Spread
0.15 to 0.6m
Leaves
green, dark green, evergreen
Flowers
yellow, orange, red, gold, 3 to 12cm

Problèmes courants

  • Spider mites Tiny pests that cause stippling on leaves and webbing; thrive in hot, dry conditions.
  • Aphids Small, pear-shaped insects that cluster on new growth and can stunt plants.
  • Leaf spot Fungal disease causing spots on leaves, especially in humid conditions.
  • Root rot Caused by overwatering and poor drainage, leading to wilting and yellowing.

La cultiver

Propagation
Seed
When to plant
Spring, Summer

Plant marigolds around your vegetable garden, especially near tomatoes and peppers, to help keep pests away naturally.

Bonnes associations

  • Tomatoes Marigolds are thought to deter nematodes and other pests that can harm tomato plants.
  • Peppers Their scent may help repel pests that affect peppers.
  • Beans Marigolds can deter bean beetles and other common pests.
  • Cucumbers Their presence may help deter cucumber beetles.

À éloigner de

  • Fennel Fennel is known to inhibit the growth of many other plants, including marigolds.

Espèces similaires

  • Calendula Calendula shares a similar daisy-like flower form and vibrant color but has different foliage and a less pungent scent.
  • Cosmos Cosmos have a similar airy, long-blooming habit but feature finer, fern-like foliage and different flower shapes.
  • Zinnia Zinnias offer a wide range of bright colors and bloom profusely, but their foliage and flower structure are distinct from marigolds.

Science

Native range
North and South America

Marigolds thrive in open, sunny areas with well-drained soil, often found in meadows or disturbed ground in their native habitats.

Value to wildlife
nectar source
Pollinators
bees, butterflies
Uses
Ornamental, Cut flowers, Companion planting, Natural dye

Au fil des saisons

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Flowering
Fruiting
Foliage

Repères écologiques

Salinity
2/9
Soil reaction
6/9
Light
8/9
Temperature
8/9
Moisture
4/9
Nutrients
6/9

Ce qu'on demande souvent

How do I get marigolds to bloom more?
Regularly deadhead spent flowers and ensure they receive adequate sunlight and consistent watering.
Can marigolds be grown indoors?
Yes, marigolds can be grown indoors in a sunny window, but they generally perform best outdoors.
What's the best way to start marigolds?
Starting marigolds from seed indoors a few weeks before the last frost or sowing directly into the garden after the danger of frost has passed are both effective.
Why are my marigold leaves turning yellow?
Yellowing leaves can be a sign of overwatering, poor drainage, or nutrient deficiency.

D'où vient le nom

The genus name 'Tagetes' is believed to honor Tages, a figure from Roman mythology who was the grandson of Jupiter and a skilled prophet. The common name 'Marigold' likely comes from 'Mary's Gold', referring to the Virgin Mary.

Bon à savoir

  • Marigolds are native to the Americas.
  • Their strong scent is believed to deter some pests.
  • They are often planted alongside vegetables like tomatoes and peppers.
  • The color of marigold flowers can range from yellow to orange to deep red.

Ton marigold 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.