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Guide botanique

Tomato.

Solanum lycopersicum

Prononciation soh-LAH-num ly-koh-PER-sih-kum

Aussi appelée Garden Tomato, Tomato

Solanum lycopersicum
Photo de harrylurling (CC BY) via gbif

Tomatoes are popular, warm-season annuals grown for their delicious fruit. They come in a huge variety of shapes, sizes, and colors, making them a versatile addition to any garden. Proper support and consistent care are key to a bountiful harvest.

En un coup d'œil

Care level
Moderate
Plant type
Annual vegetable
Light
Full sun
Indoor light
direct
Water
Every 1 to 3 days
Mature size
1 to 3 meters tall
Growth rate
fast
Hardiness
USDA 2 to 11
Bloom time
Summer

Entretien

Tomatoes need plenty of sun and consistent watering to prevent issues like blossom end rot. Support the plants with stakes or cages as they grow to keep the fruit off the ground and improve air circulation. Watch out for common pests like aphids and hornworms.

Watering
Water deeply and consistently, especially during fruit development. Avoid overhead watering to reduce disease risk.
Feeding
Feed regularly with a balanced fertilizer, switching to one lower in nitrogen and higher in phosphorus once flowering begins.
Pruning
Prune suckers (side shoots) on indeterminate varieties to improve fruit production and air circulation. Remove lower leaves touching the soil.
Repotting
Tomatoes are typically grown as annuals and not repotted, but seedlings can be transplanted into larger pots if started indoors.
Soil
Rich, well-draining loam
Soil pH
6.0 to 6.8
Temperature
15 to 30°C
Humidity
50 to 70%
Drought tolerance
moderate
Lifespan
Annual
Deer and rabbits
low

Signes qu'il faut rempoter

  • Roots circling densely around the bottom of the pot.
  • Water drains through the pot very quickly without soaking the soil.
  • Plant growth appears stunted despite adequate light and water.
  • White, web-like roots are visible on the soil surface.

Sécurité

People
The leaves, stems, and unripe fruit contain solanine, which can cause stomach upset and other symptoms if ingested in large quantities.
Pets
The fruit is safe for pets, but the leaves and stems contain solanine and can be toxic if ingested in large quantities.
Children
Small children might be tempted to eat unripe tomatoes, which can cause gastrointestinal upset due to solanine content.
Contact allergens
Some individuals may experience skin irritation from handling tomato plants, especially the leaves and stems.
Airborne allergens
Tomato pollen can be an allergen for sensitive individuals, potentially causing respiratory issues.
Edibility
While the ripe fruit is edible, unripe or green parts of the plant can be toxic.

Comment l'identifier

  • Fuzzy stems and leaves
  • Yellow, star-shaped flowers
  • Vining or bushy growth habit
  • Fleshy, edible berries (fruit)
  • Distinctive, pungent aroma
Height
0.3 to 3m
Spread
0.3 to 1m
Leaves
green, evergreen
Flowers
yellow, 1 to 2cm
Fruit
red, yellow, orange, green, purple, pink, Summer to Fall

Problèmes courants

  • Early Blight Causes dark spots with concentric rings on leaves, leading to yellowing and leaf drop.
  • Late Blight A fast-spreading disease causing water-soaked lesions on leaves and stems, often leading to plant death.
  • Tomato Hornworm Large green caterpillars that can defoliate plants rapidly.
  • Aphids Small, sap-sucking insects that can weaken plants and transmit diseases.
  • Blossom End Rot A dark, sunken spot on the blossom end of the fruit, usually caused by inconsistent watering and calcium deficiency.

La cultiver

Propagation
seed, cuttings
When to plant
Spring, Summer
Overwintering
Tomatoes are annuals and will not survive freezing temperatures. In cooler climates, they are grown as annuals. In frost-free regions, they might perennialize if protected, but yield often declines significantly in subsequent years.
In containers
Excellent for containers, especially determinate or dwarf varieties. Use pots at least 5-gallon size per plant, with good drainage.

Seed Starting Indoors

  1. Sow seeds about 1/4 inch deep in seed starting mix 6-8 weeks before the last expected frost.
  2. Keep soil consistently moist and warm (70-80°F or 21-27°C) for germination.
  3. Provide ample light once seedlings emerge, using grow lights if necessary.
  4. Harden off seedlings by gradually exposing them to outdoor conditions for a week before transplanting.
  5. Transplant into the garden after all danger of frost has passed and soil has warmed.

Stem Cuttings

  1. Take 4-6 inch cuttings from healthy, non-flowering side shoots.
  2. Remove the lower leaves, leaving only the top few.
  3. Dip the cut end in rooting hormone (optional).
  4. Place the cutting in moist potting mix or a glass of water.
  5. Keep warm and in bright, indirect light until roots form, then transplant.

Plant tomatoes with herbs like basil and chives to enhance flavor and deter pests, and consider root vegetables like carrots that improve soil structure.

Bonnes associations

  • Basil Basil is thought to improve tomato flavor and repel some pests like tomato hornworms and whiteflies.
  • Marigolds Certain varieties of marigolds can deter nematodes in the soil, which can harm tomato roots.
  • Carrots Carrots help loosen the soil, which can benefit tomato root growth, and they don't compete for the same nutrients.
  • Onions Onions can help deter pests that might attack tomatoes, and they have different nutrient needs.

À éloigner de

  • Cabbage Cabbage family plants can stunt the growth of tomatoes when planted nearby.
  • Fennel Fennel is known to inhibit the growth of many other plants, including tomatoes.

Espèces similaires

  • Eggplant Both are in the Solanum genus and share similar cultural needs and susceptibility to some pests and diseases.
  • Peppers Peppers are also warm-season fruiting plants with similar light and soil requirements.
  • Potato Potatoes are closely related to tomatoes within the Solanum genus and can be affected by some of the same diseases.

Science

Family
Solanaceae
Genus
Solanum
Order
Solanales
Class
Magnoliopsida
Native range
Southwestern South America, specifically the Andes region.
Conservation
Not of conservation concern.

In its native habitat, it grows in disturbed soils and along the edges of forests, often as a sprawling vine.

Value to wildlife
nectar source, larval host plant
Pollinators
bees, butterflies, moths
Uses
culinary, ornamental

Au fil des saisons

JFMAMJJASOND
Flowering
Fruiting
Foliage

Repères écologiques

Salinity
1/9
Soil reaction
6.5/9
Light
8/9
Temperature
7/9
Moisture
6/9
Nutrients
7/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How much sun do tomatoes need?
Tomatoes thrive in full sun, needing at least 6 to 8 hours of direct sunlight daily.
What is the best soil for tomatoes?
They prefer well-draining, fertile soil rich in organic matter.
How often should I water tomatoes?
Water consistently, aiming for about 1 to 1.5 inches of water per week, more in hot weather.
When should I fertilize tomatoes?
Fertilize at planting and then every 3 to 4 weeks with a balanced fertilizer or one formulated for tomatoes.
Can tomatoes be grown in containers?
Yes, many varieties do well in containers, provided they are large enough and have good drainage.

D'où vient le nom

The genus name 'Solanum' comes from the Latin word 'solamen', meaning 'quieting' or 'comforting', possibly referring to its narcotic properties. The species name 'lycopersicum' is derived from Greek words 'lykos' (wolf) and 'persikon' (peach), leading to the common name 'wolf peach'.

Bon à savoir

  • The word 'tomato' comes from the Aztec word 'tomatl'.
  • There are thousands of tomato varieties grown worldwide.
  • Tomatoes were once believed to be poisonous in Europe.
  • The largest tomato ever grown weighed over 11 pounds.

Ton tomato 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.