Plant Nurseries & Garden Centers in Merrillville, IN

Where to buy plants here

Where to buy plants in Merrillville, IN: big-box vs. independent

Merrillville, IN has 3 big-box garden centers in this directory's own classification. Independent, big-box, and grower are separate business-structure categories on file for each listing, not a ranking of one over another.

Big-box, named

Growing conditions

USDA zone shown is real for Merrillville's most common ZIP code; no NOAA station has matched closely enough to compute frost dates or a monthly calendar here yet.

USDA hardiness zone: 6a
Avg. minimum winter temp: -10°F

What's plantable right now

Our frost-relative planting windows don't apply here: we don't have frost-date data for this ZIP.

Planting windows and crop timing here are computed from USDA/NOAA climate data and the university extension sources cited below, not a site visit or soil test. Treat this as a starting point: local conditions vary, and a local nursery or extension office can advise on your exact site. See our full Disclaimer.