With 104 suits in 16 stadiums throughout Canada, the USA and Mexico, the 2026 FIFA Global Cup will likely be football’s largest tournament ever.
It’s our task as turfgrass researchers employed by means of FIFA, the sport’s governing frame, to verify the ones pitches really feel the similar for avid gamers and that the grass prospers.
That’s no longer so easy. If truth be told, it looked like an unattainable problem to start with.
Choosing the right turf
The dimensions of this task was once unparalleled: 3 distinct climatic zones, over 3,100 miles between the farthest stadiums, and venues starting from stadiums open to the warmth of Mexico Town and Miami to enclosed NFL stadiums in Dallas and Atlanta, to the cooler climates of Boston and Toronto.
In spite of the original eventualities of every stadium, FIFA has a protracted record of laws for the way the fields should be constructed. The grass must be actual however bolstered so it may care for a large number of video games and ceremonies. Each and every box wishes an automated irrigation device, excellent drainage, integrated vacuum and vents to stay the grass and soil aerated, and synthetic develop lighting fixtures to stay the grass wholesome.
Each and every host town is liable for working out the way to meet those necessities.
Presently, 8 of the 2026 host stadiums in most cases use synthetic turf – how will they briefly transfer to actual grass for the Global Cup?
Even trickier, 5 of the stadiums have domes, this means that the grass will get much less daylight. How can they preserve the grass alive for 8 weeks?
How are we able to be sure that a participant competing in Philadelphia has the similar on‑box enjoy as a participant competing in Guadalajara or Seattle?
The brand new turfgrass is going down in New England’s Gillette Stadium close to Boston. WCBV.
Our group on the College of Tennessee and Michigan State College has spent the previous 5 years researching those questions to offer steering to the host towns. Right here, we’ll discover one of the vital maximum necessary questions we confronted: which grass to develop, the way it’s grown, how we plan to make it even more potent, and the way to transfer it safely to every stadium.
Rising the grass
Generally, sod is grown on local soil. When harvested, the roots are reduce, which shocks the plant and will extend root reestablishment for a number of weeks.
That wouldn’t paintings for the Global Cup as a result of video games might happen inside of simply 10 days of set up. If the roots can’t turn into established rapid sufficient, the grass will likely be weaker and extra liable to injury.
To handle this, we made up our minds to make use of sod grown on plastic with sand as a base.
Sod grown on plastic permits the roots to unfold out and keep intact, so when the sod is moved, the grass reestablishes itself briefly to be able for video games.
John N. Trey Rogers
Bring to mind it like rising grass in a plastic tray, however on a far higher scale. When the roots succeed in the plastic, they unfold sideways and intertwine, forming a dense rooting device. Since the roots keep intact right through harvest, the sod studies minimum pressure and may also be able to play nearly right away after set up.
Sod for sports activities fields is generally grown in a base of sand to offer fast drainage and save you the grass from getting compacted because the roots turn into established.
The issue is that rising grass in 2 inches of sand on a plastic sheet comes with dangers. On account of the plastic, a unmarried heavy rainfall whilst the grass is changing into established can wash the uncovered sand away.
To reap sod, growers have apparatus that rolls it up like carpet. The plastic sheeting is obvious underneath the sod harvested right here. The picture was once taken at Carolina Inexperienced Turf Farm in June 2025.
John N. Trey Rogers
For hot‑season sod farmers – those who develop grass that prospers in prime temperatures – sand washing away is much less of a priority since the Bermudagrass they develop establishes briefly. Then again, cool‑season sod farmers typically develop Kentucky bluegrass, which germinates slowly in comparison to different turfgrass species, expanding the danger of washouts.
We made up our minds to combine a quicker‑germinating species – perennial ryegrass – with Kentucky bluegrass grown on plastic after which examined quite a lot of seeding ratios. We discovered that an 84% Kentucky bluegrass and 16% perennial ryegrass combination produced a more potent sod than natural Kentucky bluegrass on my own 4 months after seeding. Since 2025, those findings had been used on sod farms throughout North The us, past the ones rising grass for the Global Cup.
Stabilizing the skin
“One World Cup game is equal to a Super Bowl,” FIFA officers love to remind us. Since every box will host a large number of video games and ceremonies, together with as much as 9 video games over six weeks, the fields wish to be extraordinarily sturdy.
To lead them to harder, we combine plastic fibers into the herbal grass, which creates a hybrid turfgrass device. Because the grass grows, its roots wrap round those plastic fibers, which assists in keeping the skin solid and company. Those fibers also are coloured to check the herbal grass, so even supposing the true grass wears down, they lend a hand the sphere keep inexperienced.
Hybrid turfgrass techniques may also be created in two techniques: by means of sewing plastic fibers into an current grass box or by means of laying down a carpet of plastic fibers this is then full of sand and seeded to develop new grass.
One approach to insert plastic fibers into sod is sewing them into current sod.
Ryan Bearss
Stitched techniques had been utilized in Global Cup video games for a very long time, however carpet techniques are nonetheless relatively new to the match – they have got been used best within the 2023 Girls’s Global Cup.
We examined 8 carpet techniques to peer how they carried out and located that every one might be effectively grown on plastic. The entire floor efficiency exams – ball soar, rotational resistance and floor hardness – on those 8 carpets additionally met FIFA requirements.
A carpet device for stabilizing sod comes to beginning with plastic fibers, then filling plastic trays with sand and the seed to develop new grass.
Jackie Lyn A. Guevara
One form of carpet was once selected by means of 3 host towns for his or her stadiums: Vancouver, Los Angeles, and Philadelphia.
Getting the sod from farm to stadium
Lots of the stadiums – 14 of them – may have sod this is grown on plastic, then rolled up and shipped to the venue right through spring 2026. One of the grasses received’t need to commute a long way, however some will likely be shipped in refrigerated vehicles around the nation. For the reason that sod stays absolutely intact after harvest, it may face up to lengthy commute occasions.
Sod is generally moved in rolls. Delivery time is necessary when opting for the variability and site.
Jackie Lyn A. Guevara
5 of the ones stadiums don’t get sufficient daylight, so they’ll use cool-season grasses that require much less mild than warm-season grasses.
Whilst the open-air stadium in Miami will use Bermudagrass, the domed stadium in Houston, regardless of being at a an identical latitude, will use the Kentucky bluegrass and perennial ryegrass combine. That implies cross-country journeys from cool-season sod farms in Denver and Washington to domed stadiums within the southern areas is very important.
It’s wild to suppose that that is all important, however the period of the match and distinctive stadium environments name for innovation.
