Why a Sonoma Winery Replaced Zinfandel With 3000 Sunflowers

Chateau Diana removed a small block of vines and turned the land into a visitor attraction. The field is modest, but the change belongs to a much larger contraction in California wine-grape acreage.

What happened

Chateau Diana, a family-owned winery in Sonoma County's Dry Creek Valley, has replaced 1.25 acres of Zinfandel with 3,000 sunflowers representing 12 varieties. The flowers were planted after co-owner Corey Manning learned that the vines would be removed. His stated alternative was not another commercial crop, but an empty field that would eventually return to grass.

The distinction matters. Chateau Diana has not presented sunflowers as a more profitable agricultural commodity, and there is no public evidence that the flowers will be harvested or sold. The winery is using the field as part of its hospitality program. Its website now offers reserved tables in the sunflower garden and promotes events beside the planting.

The winery continues to make wine and host visitors, while sourcing grapes from other vineyards. ABC7 reported that pumpkins may follow the sunflowers. What has changed, therefore, is not the company's identity as a winery. It is the purpose assigned to this particular piece of land.

A small parcel inside a large contraction

At 1.25 acres, the removed block is too small to explain California's vineyard correction. It is useful precisely because it gives that correction a visible form.

The latest California Grape Acreage Report, produced by the US Department of Agriculture's National Agricultural Statistics Service with the California Department of Food and Agriculture, estimates 540,000 acres of wine grapes in 2025. The estimate was 580,000 acres in 2024 and 610,000 in 2023. The 2025 decline alone was 6.9 percent.