Oregon & Washington June 9 2026 Crop Update

Oregon and Washington seed crops are tracking mostly average as we head into June harvest, with localized challenges around weed pressure, pests, and early heat shaping yield expectations across key species.

Snapshot: Where Fields Stand Today

Growers across Oregon and Washington report that most grass and specialty seed crops are on track for average yields, with a few bright spots where conditions stay cool and timely rains arrive. Persistent weed pressure, early-season drought in some areas, and insect challenges in clover are the main watchouts as producers move into swathing and harvest.

Kentucky Bluegrass

In the Nezperce dryland region, Kentucky bluegrass fields are currently rated as average, with a few weeks still to go before harvest. If cooler temperatures hold and the forecasted rains materialize, growers are optimistic that yields could push above average. However, weed pressure is notably high this year, with Bulbous bluegrass and Ventenata expected to be more common in fields. Managing these species will be key for maintaining clean lots and protecting quality for end users.

In the Washington Basin, weather through pollination and seed fill has been favorable, which should support heavier seed and cleaner samples at processing. Most fields there are also expected to come in around average, with swathing set to begin over the next 10 days. Because of the mild winter, growers are seeing elevated levels of Annual bluegrass, Alkaligrass, and Mustards. That weed complex may reduce the number of 0/0 lots available from this region, despite otherwise solid production conditions.

Fine Fescue

Fine fescue across the region is holding steady at an overall average outlook. Pollination is complete, and most fields are expected to be swathed toward the end of the month.

New spring seedings destined for a first harvest in 2027 are facing above-average pressure from Symphylans. Some of these acres are being re-seeded ahead of the next forecasted rain to protect stand establishment and long-term productivity.

Perennial Ryegrass

Perennial ryegrass is just entering pollination, and growers are closely watching the forecasted heat at the end of this week. The concern is whether there will be enough moisture to fully fill seed heads, particularly on lighter soils or fields with limited irrigation.

Annual and Roughstalk bluegrass are exerting significant pressure in perennial ryegrass fields this season. A few growers are also starting to see rust, and fungicides are being deployed to keep disease impacts to a minimum ahead of harvest.

Tall Fescue

Tall fescue stands are performing differently depending on water availability. In wetter areas, tall fescue is tracking close to average, while non‑irrigated or drier soils may see yields up to 15% below average if current conditions persist.

Clovers

White clover is in full bloom and generally looks strong from the road, but seed weevils are a growing concern. Some of the standard chemistries are proving less effective this year, forcing growers to turn to more expensive alternatives and to make two to three applications to achieve control. Because seed weevils bore into the seed, yield loss may not be obvious until cleaning, when damaged, lighter seed is removed. If injured seed remains in the lot, it will not germinate, raising quality concerns downstream even where harvest volume appears good.

Annual Ryegrass

Annual ryegrass harvest is expected to run 7–10 days earlier than normal this season. Most growers anticipate below‑average yields, with some dryland fields projected to come in about 10% under average due to drought stress.

Other Crops

Bentgrass fields are, for the most part, on track for average yields at this point in the season.

Turnip seed crops are currently being swathed and should be harvested within 7–10 days, with most fields expected to yield around average as well.

Bermudagrass stands range from average to below average depending on production location and local conditions. This variability reflects differing moisture patterns and temperature swings across the region.

Looking Ahead: Weather and Harvest Risk

While harvest is rapidly approaching, there is still room for this crop to move in either direction during pollination and seed fill. In the Willamette Valley, for example, early‑week forecasts are calling for rain the week of June 8, shifting quickly to temperatures around 95 degrees by the weekend.

Those kinds of rapid swings can affect pollination success, seed fill, and disease pressure across multiple species. As we move through June, PSA will continue to monitor conditions across the West; be on the lookout for our California crop update coming soon as harvest progresses in that region.