Can I buy Tifway 419 seed?

No. It is a sterile hybrid and any product sold as Tifway seed is mislabelled common bermudagrass. Tifway is available as sod, plugs or sprigs only.

Will Tifway survive in shade?

No. Shade tolerance is 1 of 5, the lowest of any species here. Below four hours of direct sun the stand thins within one season and nothing brings it back except removing the shade.

How deep does it root?

150 to 300 mm in a deep loam, the deepest in this profile set, which is why it survives on 20 mm of water per week once established.

grass profile2026-09-03By The Turf DeskCynodon dactylon x transvaalensis · warm-season

Hybrid bermudagrass Tifway 419: the 15 mm sports surface

Cross-section plot for Hybrid bermudagrass (Tifway 419): thatch thickness, root depth and shoot density — Generated from this page: thatch banded by tendency, roots to 300 mm, dot pitch set by the 12 mm cutting floor

Tifway 419 is a sterile hybrid, so it cannot be sown from seed at all: it goes in as sod, plugs or sprigs. What it buys is the most wear-tolerant, most self-repairing surface in this profile set at a 15 to 25 mm cut, on 20 g of nitrogen per square metre per year. What it costs is winter: five months of straw-coloured dormancy.

Why it cannot be seeded, and what that means for renovation

Tifway 419 is a hybrid between common bermudagrass and African bermudagrass and sets almost no viable seed. Establishment is vegetative: sod at 100 percent cover on day one, or plugs on a 300 mm grid, or sprigs at 5 to 10 cubic centimetres of stolon per square metre. Establishment from plugs takes 26 to 52 weeks to full cover.

Because it spreads by stolons and rhizomes at 100 to 150 mm a season, repair is done by cutting plugs out of a nursery area and pressing them into the bare ground. A 100 mm plug in warm soil with water closes over in three to four weeks. This is the reason a Tifway lawn never needs overseeding for repair, only for winter colour.

Cutting at 15 to 25 mm, and the mower that survives it

The band is 15 to 25 mm with a floor of 12 mm. Below 15 mm the stolon mat is exposed, the surface scalps on uneven ground, and the stand thins to the point where weeds establish in a single season. Above 30 mm the canopy becomes spongy and the thatch layer builds under it.

The one-third rule at 20 mm allows 7 mm of growth between cuts. In peak summer that is every three to four days. This species is normally cut with a reel mower; a rotary mower at 25 mm is acceptable for a home lawn but will leave a ragged tip that browning shows up on within a day.

Nitrogen at 20 g per square metre, and the summer weight

Budget 20 g of nitrogen per square metre per year split 40:35:25. This is the highest nitrogen requirement in the profile set and it is driven by the growth rate: bermudagrass can extend 25 mm a day in midsummer, and every cut removes nitrogen with the clippings.

The 25 percent autumn slice should go down at least six weeks before the first expected frost. Late nitrogen on a warm-season grass produces soft growth that is killed by the first cold night and leaves a mat of dead leaf that contributes to the spring thatch problem.

Iron is worth more than extra nitrogen if the lawn looks yellow in midsummer at full nitrogen: 2 g per square metre of ferrous sulphate deepens the colour for three weeks without pushing leaf growth.

Annual nitrogen plan for 100 square metres of Tifway 419

Window	Share	Actual N	Note
Late spring, after full green-up	40 percent	800 g	Soil temperature above 18 degrees Celsius
Midsummer	35 percent	700 g	Split into two applications three weeks apart
Early autumn	25 percent	500 g	At least six weeks before first frost

Winter colour and the overseed decision

Winter colour is dormant: the lawn goes straw-brown after the first hard frost and stays that way for four to five months. Overseeding with perennial ryegrass at 60 g per square metre gives winter colour, but it costs you spring: the ryegrass competes with the bermudagrass as it breaks dormancy and delays green-up by two to four weeks.

If you overseed, do it when soil temperature at 50 mm drops below 21 degrees Celsius but stays above 15, and cut the bermudagrass to 12 mm first so the seed reaches soil. If you do not overseed, apply a colourant or simply accept the dormancy: the turf is alive and the crown is undamaged.

Questions that come up on this page

Can I buy Tifway 419 seed?: No. It is a sterile hybrid and any product sold as Tifway seed is mislabelled common bermudagrass. Tifway is available as sod, plugs or sprigs only.
Will Tifway survive in shade?: No. Shade tolerance is 1 of 5, the lowest of any species here. Below four hours of direct sun the stand thins within one season and nothing brings it back except removing the shade.
How deep does it root?: 150 to 300 mm in a deep loam, the deepest in this profile set, which is why it survives on 20 mm of water per week once established.

Sources

The public reference material the figures on this page were checked against:

Annual nitrogen budget15 g·m⁻²

Irrigation per week20 mm

recomputed on these two numbers · species profiles inside ±15%: 5/6 · operation cards touched: 3/3

Kentucky bluegrass, Turf-type tall fescue, Hybrid bermudagrass (Tifway 419), Perennial ryegrass, Zoysiagrass (Empire)

Mowing to a set height, Hollow-tine core aeration, Nitrogen programme with split applications

bench heat, dim to bright: 0 / 1 / 3 / 2 / 0

Adjacent entries

Symptom reading table

Four field symptoms, each read back to the parameter that produced it rather than to a product. The last column is the one number that row turns on, with the threshold drawn on it.

Reading	What you see	Chain of causes	Parameter correction	Field confirmation	Scale
Bare patches2026-09-29	This row is released with the 2026-09-29 entry, and will carry the same four columns as the others.				4 wk weeks to close
Moss2026-10-17	This row is released with the 2026-10-17 entry, and will carry the same four columns as the others.				pH 5.5 soil pH
Thatch over 15 mmreleasedflag the species on the bench →	Thatch layer 15 mm or thicker recovery window 4–12 wk	Nitrogen has been applied above the species budget for several seasons, producing more lignin-rich stem and stolon tissue than the soil can decompose. Clippings have been bagged for years on a lawn that is now below 10 mm of thatch, removing the nitrogen the microbes need to break the mat down. Soil pH has drifted below 5.5, collapsing the bacterial population and shifting decomposition to slower fungal pathways. The lawn is a species with a thatch tendency of 5 out of 5 and has never been scarified. Irrigation is frequent and shallow, keeping the surface constantly moist and the mat compressed rather than allowing it to dry and fracture.	Scarify 5 mm, in early autumn when soil temperature at 50 mm is between 15 and 21 degrees Celsius, with the tines set to just graze the mat. Overseed the same day at the full species rate, 10 to 15 g per square metre for Kentucky bluegrass, 25 to 35 for perennial ryegrass, 30 to 40 for tall fescue. Topdress 1 to 2 mm of sand-loam matched to the root zone, then water 6 to 10 mm a day for ten days. Cut the annual nitrogen to the species budget: 15 g per square metre for Kentucky bluegrass, 10 for zoysia, 6 for centipedegrass and fine fescues. Raise soil pH into the species band with 200 to 250 g per square metre of lime on a loam, applied in the following autumn and retested after 12 months. Switch to mowing at the top of the species band and mulch the clippings, which returns 1 to 2 g of nitrogen per square metre per year.	Cut a 100 mm square flap of turf with a knife, lift it like a hinge and read the brown fibrous layer between the green leaf bases and the dark soil with a ruler. Do it in three places. Push a screwdriver into the profile; if it stops in the mat before reaching soil, the layer is thick and hydrophobic. Watch a hose test: water beading and running off a dry lawn instead of soaking in is the signature of a hydrophobic thatch layer. Check for the crown being lifted above the soil line by parting the grass with both hands; crowns 15 to 20 mm above soil dry out in two days.	15 mm mat depth
Broadleaf weeds2026-11-01	This row is released with the 2026-11-01 entry, and will carry the same four columns as the others.				15 g annual N