CRP seed for sale in Harrison County, Iowa.
Clarity Seed Farms sources, cleans, and blends Iowa-ecotype CRP seed for Harrison County landowners. Every mix is priced on pure live seed and matched to your CP practice code, your acres, and the Loess Hills soils under your contract.
Harrison County holds a large share of the Loess Hills scenic corridor, where dry ridge prairie species and prescribed-fire-ready mixes are the standard.
Last updated July 18, 2026 · Clarity Seed Farms Editorial
Harrison County land and soils
Steep, wind-deposited loess ridges along the Missouri River — some of the most erodible and most botanically distinctive ground in the Midwest.
Ida–Monona–Napier silt loams, deep and fine-textured, that gully quickly on exposed slopes and shed water fast.
Moisture: Dry to very dry on south- and west-facing ridges, mesic in the draws and toe slopes.
Common CP practices in Harrison County
- CP25 — Rare and declining habitat that mirrors the region's remnant dry prairie.
- CP2 — Native grass cover on highly erodible ridge ground.
- CP42 — Pollinator habitat with a dry-site forb list.
- CP4D — Permanent wildlife habitat on slopes too steep to farm.
Harrison County NRCS office
Your conservation plan, seeding specification, and practice approval all run through the local USDA Service Center. Verify your CP code and required species diversity there before you order seed.
NRCS Harrison County Field Office, co-located with the Farm Service Agency at the Logan USDA Service Center.
Iowa NRCS field offices are occasionally consolidated across counties. Confirm the current address, phone number, and hours with the official locator below.
New to the paperwork? Read our CRP compliance checklist before your appointment.
Recommended CRP seed mixes for Harrison County
These mixes fit Loess Hills soils and the practices most often approved in Harrison County. We adjust ratios to your conservation plan before quoting.
Shortgrass CP25 blend at a 30/10 grass-to-forb PLS ratio.
Shortgrass native prairie mix sized for small lots and yards.
CP42 pollinator mix tuned for droughty upland sites.
USDA CP4D permanent wildlife habitat mix: native grasses, forbs, and shrub component.
Low-fuel perennial mix for prescribed-fire firebreaks.
When to plant in Harrison County
Dormant seed on the contour between mid-November and freeze-up. Broadcast plus a light drag beats drilling on slopes steeper than about 15 percent.
Biggest local challenge: Sheet and gully erosion during the first season. Use a cover crop nurse and avoid working the soil more than establishment requires.
Planting windows by state →Species that perform here
Dry loess prairie supports species found nowhere else in Iowa, and the ridge system is a major raptor and monarch migration corridor.
Full native species library →Harrison County CRP seed questions
Where can I buy CRP seed in Harrison County, Iowa?
Clarity Seed Farms sells CRP seed for sale in Harrison County, Iowa. We source, clean, and blend Iowa-ecotype native seed, then match the mix to your CP practice code and your Loess Hills soils. Send your acres and practice number and we return a priced, PLS-based quote.
Which CRP mix works best in Harrison County?
Most Harrison County contracts land on CP25 or CP2. On Loess Hills ground the deciding factor is moisture: Dry to very dry on south- and west-facing ridges, mesic in the draws and toe slopes.
When should I plant CRP seed in Harrison County?
Dormant seed on the contour between mid-November and freeze-up. Broadcast plus a light drag beats drilling on slopes steeper than about 15 percent.
Where is the NRCS office for Harrison County?
The NRCS field office serving Harrison County is normally at the USDA Service Center in Logan, Iowa, co-located with the Farm Service Agency. Confirm the current address and hours with the USDA Service Center locator before you drive out.
How much CRP seed do I need per acre in Harrison County?
Iowa CP practices are specified in pure live seed per acre, and most CP25 and CP42 plans in Harrison County fall between 6 and 10 PLS pounds per acre depending on the forb ratio. Use our seeding rate estimator, then confirm against your conservation plan.
Ready to price seed for Harrison County?
Send acres, CP practice code, and your target planting date. We'll return a PLS-based quote built for your Loess Hills soils.
Request a quote