Delaware Extension & Soil Testing Directory
Find your local Delaware County Cooperative Extension office, official state university soil analysis lab, and Master Gardener volunteer plant clinics.
🔬 State Soil Testing Laboratory
Official Lab: University of Delaware Soil Testing Program
Standard Fee: $15 routine soil sample kit
Turnaround Time: 5 to 7 business days
State residents can obtain soil sample bags and submittal forms at any local county extension branch.
🌱 State Growing Conditions
Soil Types: Coastal Plain Silt Loam and Sandy Loam
Hardiness Zones: Zone 7a / 7b
Popular Crops: Corn, soybeans, lima beans, peaches, lawn grass
Delaware sandy soils leach nitrogen quickly; use organic compost to improve nutrient retention.
Featured County Directories in Delaware (1 Listing)
New Castle County
Extension Office: University of Delaware Cooperative Extension - New Castle County
Soil Lab Fee: $15 routine soil sample kit
Phone: (302) 831-2506
Looking for Another County in Delaware?
Every county in Delaware is supported by the state Land-Grant University Extension system. If your specific county directory is currently being indexed, you can submit your soil samples directly to University of Delaware Soil Testing Program or contact our editorial desk for direct local office hours.
Request Local Extension Info for Your CountyFrequently Asked Questions: Delaware Soil & Extension
How do I get my soil tested in Delaware?
To test your soil in Delaware, collect 10 to 12 soil cores from a depth of 4 to 6 inches across your garden or field, air-dry the sample indoors, fill out your county extension submission form, and submit it to University of Delaware Soil Testing Program or your local county extension office.
How much does soil testing cost in Delaware?
Routine soil fertility analysis in Delaware typically costs $15 routine soil sample kit. Turnaround time for results is usually 5 to 7 business days.
Does every county in Delaware have a Cooperative Extension Office?
Yes. Every county in Delaware is served by the state's Land-Grant University Extension system. While our directory highlights primary regional office hubs and university labs, local extension agents serve horticulturists, farmers, and home gardeners across all counties in Delaware.
Written & Verified by Sahajul
Verified Author & Founder
Sahajul is an independent agricultural data researcher based in India and founder of LocalSoilLab.com. He specializes in compiling, structuring, and verifying US land-grant university extension services, soil lab testing fee schedules, and county Master Gardener contact directories directly from official .edu and USDA NIFA portals.