North America Non-native Plant

Garden Asparagus

Botanical name: Asparagus officinalis

USDA symbol: ASOF

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in St. Pierre and Miquelon  

Synonyms: Asparagus officinalis L. ssp. officinalis (ASOFO2)   

Garden Asparagus: The Perennial Veggie That Keeps on Giving If you’ve ever wondered whether you should dedicate precious garden space to growing your own asparagus, you’re not alone. Garden asparagus (Asparagus officinalis) is one of those plants that makes gardeners pause and think – is it worth the wait? This ...

Garden Asparagus: The Perennial Veggie That Keeps on Giving

If you’ve ever wondered whether you should dedicate precious garden space to growing your own asparagus, you’re not alone. Garden asparagus (Asparagus officinalis) is one of those plants that makes gardeners pause and think – is it worth the wait? This perennial vegetable crop offers both edible rewards and unexpected ornamental appeal, though it comes with a few considerations worth exploring.

What Exactly Is Garden Asparagus?

Garden asparagus is a hardy perennial that produces those delicious spears we love to grill and sauté each spring. But here’s something many folks don’t realize – this plant isn’t native to North America. Originally from Europe, western Asia, and northwestern Africa, asparagus has made itself quite at home across our continent, naturalizing and persisting in the wild from coast to coast.

You’ll find established populations of garden asparagus growing wild in an impressive range of locations, from Alberta to Alabama, and from British Columbia to Wyoming. It’s particularly well-adapted to areas with facultative upland conditions, meaning it prefers non-wetland areas but can tolerate some moisture.

The Good, The Great, and The Wait, Really?

Let’s be honest – the main reason most people grow asparagus is for those tender spring spears. But there’s more to this plant than meets the dinner plate:

  • Longevity: Once established, an asparagus bed can produce for 15-20 years or more
  • Ornamental value: The feathery, fern-like foliage creates beautiful texture in the garden, reaching 4-6 feet tall
  • Seasonal interest: Foliage turns golden yellow in fall, adding autumn color
  • Wildlife benefits: Small flowers attract pollinators, and female plants produce bright red berries that birds enjoy

The downside? Patience is absolutely required. You’ll need to wait 2-3 years after planting before you can harvest those coveted spears.

Where Does Garden Asparagus Shine?

Garden asparagus thrives in USDA hardiness zones 3-8, making it suitable for most of North America. It’s perfect for:

  • Dedicated vegetable gardens
  • Edible landscape designs
  • Perennial borders (for its ornamental foliage)
  • Cottage garden settings

The key is giving it space – mature plants spread and need room to develop their extensive root systems.

Growing Garden Asparagus Successfully

Want to grow your own asparagus patch? Here’s what you need to know:

Planting conditions:

  • Full sun (6+ hours daily)
  • Well-drained soil with pH between 6.0-7.0
  • Rich, organic soil amended with compost
  • Regular moisture during the growing season

Planting tips:

  • Plant crowns (root divisions) in early spring
  • Dig trenches 6-8 inches deep and 12 inches wide
  • Space crowns 12-18 inches apart
  • Cover with 2-3 inches of soil initially, gradually filling in as shoots emerge

Ongoing care:

  • Fertilize annually in early spring
  • Mulch around plants to retain moisture and suppress weeds
  • Let foliage grow undisturbed after harvest season to feed the roots
  • Cut back dead foliage in late fall or early spring

A Word About Native Alternatives

While garden asparagus isn’t invasive, some gardeners prefer to focus on native species. If you’re interested in native edible plants that offer similar perennial growing habits, consider exploring wild leeks (ramps), wild ginger, or native berry-producing shrubs that provide both food and habitat for local wildlife.

The Bottom Line

Garden asparagus can be a rewarding addition to your garden if you’re willing to invest in the long game. Yes, it takes patience to establish, and yes, it’s not native to our continent. But for gardeners who love fresh vegetables and don’t mind waiting for the payoff, few crops offer the same combination of delicious harvests and ornamental appeal that asparagus provides.

Just remember – once you plant it, you’re making a commitment. Choose your location wisely, because this perennial is in it for the long haul!

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Atlantic and Gulf Coastal Plain

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Eastern Mountains and Piedmont

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Great Plains

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Midwest

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Northcentral & Northeast

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Western Mountains, Valleys, and Coast

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Garden Asparagus

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Asparagus L. - asparagus

Species

Asparagus officinalis L. - garden asparagus

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