North America Non-native Plant

Italian Timothy

Botanical name: Phleum subulatum

USDA symbol: PHSU2

Life cycle: annual

Habit: grass

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Phleum bellardii Willd. (PHBE5)   

Italian Timothy: An Overlooked Annual Grass in American Gardens If you’ve spotted a small, unassuming grass with cylindrical seed heads popping up in disturbed areas around your neighborhood, you might be looking at Italian timothy (Phleum subulatum). This annual grass has quietly made itself at home in several U.S. states, ...

Italian Timothy: An Overlooked Annual Grass in American Gardens

If you’ve spotted a small, unassuming grass with cylindrical seed heads popping up in disturbed areas around your neighborhood, you might be looking at Italian timothy (Phleum subulatum). This annual grass has quietly made itself at home in several U.S. states, though it’s far from being a garden showstopper.

What Exactly Is Italian Timothy?

Italian timothy is a non-native annual grass that originally hails from the Mediterranean region. Despite its common name, it’s actually quite different from the more familiar timothy grass (Phleum pratense) that farmers grow for hay. This smaller cousin goes by the botanical name Phleum subulatum, and you might occasionally see it listed under its synonym Phleum bellardii.

As an annual, this grass completes its entire life cycle in just one growing season – sprouting, growing, flowering, setting seed, and dying all within a single year.

Where You’ll Find It Growing

Italian timothy has established itself in a handful of states across the country, including Maryland, Massachusetts, Oregon, and Pennsylvania. It tends to pop up in disturbed areas like roadsides, vacant lots, and waste places rather than pristine natural habitats.

Should You Plant Italian Timothy?

Here’s the thing about Italian timothy – it’s not exactly what you’d call a garden gem. This grass is more of an opportunistic settler that appears where the soil has been disturbed, rather than a plant you’d intentionally choose for your landscape design.

While it’s not classified as invasive or noxious, Italian timothy doesn’t offer much in terms of:

  • Ornamental appeal (it’s quite plain-looking)
  • Pollinator support (it’s wind-pollinated)
  • Wildlife habitat value

Better Native Alternatives

If you’re interested in incorporating grasses into your garden, consider these native options instead:

  • Little bluestem (Schizachyrium scoparium) – gorgeous fall color
  • Buffalo grass (Poaceae dactyloides) – excellent for lawns in dry climates
  • Purple needlegrass (Stipa pulchra) – California’s state grass
  • Switch grass (Panicum virgatum) – tall, architectural presence

These native grasses will provide much more visual interest while supporting local wildlife and pollinators that have evolved alongside them.

If It Shows Up Anyway

Don’t panic if Italian timothy appears uninvited in your garden. As an annual, it won’t stick around permanently unless conditions continue to favor it. You can simply pull it up if it bothers you, or let it be if it’s not causing problems – it will die off naturally at the end of the growing season.

The key is preventing the soil disturbance that this grass loves. Maintaining healthy, established plantings will make your garden less appealing to opportunistic species like Italian timothy.

The Bottom Line

Italian timothy is one of those meh plants – not particularly harmful, but not particularly beneficial either. While there’s no need to sound the alarm if you spot it, there’s also no compelling reason to invite it into your garden. Your landscaping dollars and efforts are much better spent on native grasses that will reward you with beauty, wildlife habitat, and that satisfying feeling of supporting your local ecosystem.

Italian Timothy

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Phleum L. - timothy

Species

Phleum subulatum (Savi) Asch. & Graebn. - Italian timothy

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