Lockewood Vineyards
Steep in History | Farmed for the Future

Background & History
Lockewood Vineyards started with one family’s four generations of winegrape growing tradition. The vines benefit from the sandy loam, Delta breezes, the hot summer days, and sustainable farming practices.
​
Our vineyard was previously owned by Rudy Maggio (2022 inductee into the Ag Hall of Fame, San Joaquin County) and owner of Oak Ridge Winery. Rudy’s family came to Lodi in 1928. Rudy Maggio, born in 1940, started farming at the age of 12 when his father, Roy was paralyzed by polio. By the time Maggio was 20, Roy Maggio & Son was formed. They farmed Tokay grapes on family land west of Lodi, leased acreage, and performed custom farm work.
​
Maggio bought his own piece of land totaling 40 acres in 1963 and built the family home on it in 1966.
According to state records, the Zinfandel vineyard was planted in 1959. It was interplanted with additional Zinfandel around 1991 and converted to wire. The home and vineyards were later sold to one of Rudy’s daughters and her husband.
The Merlot vineyard was planted by Rob and Lisa Kammerer (Rudy's son-in-law and daughter) in 2017.
The current owners, Leonard and Alyce Peterson acquired the historic vineyard in 2021. They named the Lockewood Vineyards because the vineyards wrapped around the home and created a sense of warmth and security.
The vineyard is certified sustainably farmed by Lodi Rules.
​
​
Old Vine Zinfandel Vineyard | Lockewood Vineyards

22 Acres | Planted 1959
Soil
22.5% Kingdom Fine Sandy Loam, 77.5% Tokay Fine Sandy Loam – 0% to 2% slopes
Environmentally Friendly Pest Management
Our bird friendly habitat helps manage some pests & insects.
We limit pesticide use (click on our Pesticide Use Report)
Our rows are mowed, not disked.
Solar-Powered
Solar powers the electricity for the vineyard's irrigation and residence.
Request An Information Packet about the Zinfandels
Get the Old Vine Zinfandel Fact Sheet
Organic Fertilizers
We use organic fertizer whenever possible.
Most fertilizer comes from chickens and horses at our other ranches.
Climate
Generally described as Mediterranean Climate. During Summer, average temperatures range from 55 – 92 degrees. The breezes from the Delta and San Francisco Bay cool the vineyard in the evenings.
Proximity to Bodies of Water
Mokelumne River : 2 miles to the East
San Joaquin Delta: 16 miles to the West
San Francisco Bay: 57 miles to the West
Appellation & Sub-Appellation
Lodi
Mokelumne
Elevation
19 feet
Rainfall
Rainfall occurs largely in Jan – March and late Fall. Average is 18.3 inches
2 Water Sources
Surface water | Woodbridge Irrigation District
Ground Water
Certified Sustainable
Sustainable farming certification through Lodi Rules

Merlot Vineyard | Lockewood Vineyards
15 Acres | Planted 2017
Soil
79.4% Kingdom Fine Sandy Loam, 20.6% Tokay Fine Sandy Loam – 0% to 2% slopes
Environmentally friendly Pest Management
Our bird friendly habitat helps manage some pests & insects.We limit pesticide use (click on our Pesticide Use Report)Our rows are mowed, not disked.
2 Water Sources
Surface water | Woodbridge Irrigation District
Ground Water
Certified Sustainable
Sustainable farming certification through Lodi Rules
Organic Fertilizer
We use organic fertizer whenever possible. Most fertilizer comes from chickens and horses at our other ranches.
Climate
Generally described as Mediterranean Climate. During Summer, average temperatures range from 55 – 92 degrees. The breezes from the Delta and San Francisco Bay cool the vineyard in the evenings.
Solar-Powered
Solar powers the electricity for the vineyard's irrigation system and residence.
Appellation & Sub-Appellation
Lodi
Mokelumne
Elevation
19 feet
Rainfall
Rainfall occurs largely in Jan – March and late Fall. Average is 18.3 inches
Proximity to Bodies of Water
Mokelumne River : 2 miles to the East
San Joaquin Delta: 16 miles to the West
San Francisco Bay: 57 miles to the West
Get the Merlot Fact Sheet
At our Lockewood Vineyards, sustainable farming is not just a "box checked". It is our way of farming.
Who is the "L" and "A" in L.A. Delta Investments, Inc.?
Get to Know Us

LEONARD H. PETERSON
President
Leonard Peterson was raised in Lodi, California and attended Lodi High School. In 1982, Leonard left Lodi to pursue business opportunities in So. California. Leonard is a serial entrepreneur with a passion for the vineyards. When he and his wife, Alyce had the opportunity, they purchased their first vineyard in 2006. Leonard is happy to be back in Lodi where almost daily he runs into old friends and acquaintances.
ALYCE F. PETERSON
Vice President
Alyce Peterson was raised in Sacramento, California and graduated from the University of Pacific in Stockton. It was always Alyce's dream that the couple own vineyards. So after a 32 years career of sales and marketing in So. California, Alyce retired to join Leonard in the winegrape industry and the couples' other pursuits.
Alyce is also a realtor with Berkshire Hathaway Home Services, Drysdale Properties selling vineyards, horse properties and country homes.
