North America Non-native Plant

Garden Tomato

Botanical name: Solanum lycopersicum

USDA symbol: SOLY2

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Alaska âš˜ A waif, a non-native that isn't naturalized in Canada âš˜ Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii âš˜ Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Garden Tomato: The World’s Favorite Non-Native Vegetable If you’ve ever grown a vegetable garden, chances are you’ve encountered the garden tomato (Solanum lycopersicum). This beloved plant has found its way into gardens across North America, despite being far from its original home. Let’s explore what makes this non-native species such ...

Garden Tomato: The World’s Favorite Non-Native Vegetable

If you’ve ever grown a vegetable garden, chances are you’ve encountered the garden tomato (Solanum lycopersicum). This beloved plant has found its way into gardens across North America, despite being far from its original home. Let’s explore what makes this non-native species such a garden favorite and how you can grow it successfully.

What Exactly Is a Garden Tomato?

The garden tomato is a herbaceous annual plant that belongs to the nightshade family. Originally from the mountains of western South America, this forb (a non-woody flowering plant) has become one of the most widely cultivated food crops in the world. While it can behave as a perennial in frost-free climates, most gardeners treat it as an annual.

Where You’ll Find Garden Tomatoes

Garden tomatoes have naturalized across an impressive range, including most U.S. states from Alabama to Wisconsin, Canadian provinces from British Columbia to Quebec, and territories like Hawaii, Puerto Rico, and the U.S. Virgin Islands. They’ve proven remarkably adaptable to different climates and growing conditions.

Why Grow Garden Tomatoes?

Despite being non-native, garden tomatoes offer several compelling reasons to include them in your garden:

  • Delicious harvest: Nothing beats the taste of a homegrown tomato
  • Aesthetic appeal: Attractive yellow flowers and colorful fruits add visual interest
  • Pollinator support: The bright yellow flowers attract bees and other beneficial insects
  • Versatility: Perfect for vegetable gardens, container growing, and raised beds
  • Educational value: Great for teaching children about plant growth and food production

Growing Conditions and Care

Garden tomatoes thrive in specific conditions that make them relatively straightforward to grow:

  • Sunlight: Full sun (6-8 hours daily) for best fruit production
  • Soil: Well-draining, fertile soil with good organic matter
  • Temperature: Warm-season crop that needs frost-free conditions
  • USDA Zones: Grown as annuals in all hardiness zones
  • Support: Most varieties need staking, caging, or trellising

Planting and Care Tips

Success with garden tomatoes comes down to proper timing and consistent care:

  • Start seeds indoors 6-8 weeks before your last frost date
  • Transplant outdoors after soil temperatures reach 60°F
  • Space plants 18-24 inches apart to ensure good air circulation
  • Water consistently but avoid overhead watering to prevent disease
  • Mulch around plants to retain moisture and suppress weeds
  • Install support structures early to avoid disturbing roots later

Consider Native Alternatives

While garden tomatoes are wonderful plants, you might also consider incorporating native alternatives that provide similar benefits to your local ecosystem. Native berry-producing plants like elderberry (Sambucus canadensis) or native ground cherries (Physalis species) can offer food for both you and local wildlife while supporting native pollinators and birds.

The Bottom Line

Garden tomatoes have earned their place in gardens worldwide through their combination of beauty, utility, and relatively easy care requirements. While they’re not native to North America, they’re not considered invasive and can be grown responsibly alongside native plants. Whether you’re a beginning gardener or an experienced grower, few plants offer the satisfaction of watching a tiny seedling transform into a productive, fruit-bearing plant that feeds both your family and local pollinators.

Just remember to provide them with plenty of sun, consistent water, and sturdy support – and you’ll be rewarded with a bountiful harvest that makes all the effort worthwhile.

Garden Tomato

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Solanaceae Juss. - Potato family

Genus

Solanum L. - nightshade

Species

Solanum lycopersicum L. - garden tomato

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA