Yes, you can grow mint from store-bought stems into full plants with just a glass of water and some patience. The fresh bunches sold in grocery stores root well when you catch them before they dry out. This free plant trick works with most mint types and takes about three weeks from start to finish.
I have started dozens of mint plants from supermarket bunches over the years. My success rate runs about 80% when I buy the freshest packages with firm green stems. Older bunches with wilted leaves or mushy stems give much worse results. Check the sell-by date and pick packages that look crisp.
The science behind rooting mint cuttings is simple. Each spot where a leaf meets the stem has the ability to grow new roots. These bumps called nodes contain cells that switch from leaf growth to root growth when wet. Put cut stems in water and those nodes produce white root nubs within 10-14 days.
Fresh mint from supermarket bunches works best when you prepare stems right. Cut at a 45-degree angle about half an inch below a node to expose the most tissue. Strip all leaves from the bottom half of the stem. These lower nodes will sit under water and grow roots while the top leaves stay dry.
Days 1-3: Setup Phase
- Select stems: Choose the firmest stems with 3-4 leaf sets from your grocery mint package for best results.
- Trim and strip: Cut ends at an angle and remove lower leaves so only the top two sets remain above water.
- Fresh water: Use room temperature water in a clean glass jar, filling about 3 inches deep.
Days 7-14: Root Emergence
- First signs: Small white bumps appear at the nodes under water marking where roots will grow from.
- Water changes: Swap in fresh water every 3-4 days to prevent bacteria that can rot stems.
- Light needs: Keep jars in bright indirect light but away from hot sunny windows.
Days 14-21: Root Development
- Length check: Wait until roots reach about 2 inches long before thinking about transplanting.
- Multiple roots: Healthy stems grow several roots from different nodes for a strong system.
- Patience pays: Rushing to plant too early leads to failed transplants and wasted effort.
Day 21+: Transplant Time
- Pot prep: Fill a container with drain holes using moist potting mix that holds water but drains well.
- Planting depth: Set stems so roots sit just below the soil surface with leaves above ground.
- After care: Keep soil moist and provide 4-6 hours of light daily for strong new growth.
When I propagate grocery mint I always start more stems than I need. Some will fail no matter how careful you are with the process. Starting 5-6 cuttings usually gives me at least 3-4 healthy rooted plants to pot up. The extras make great gifts for other gardeners once they get growing.
Your rooted cuttings need gentle care in the first weeks after transplanting. Keep soil moist but not soaked as roots adjust to their new home. Shade new plants from hot afternoon sun for a week or two. Mint from supermarket sources catches up to nursery plants within a month when treated right.
You can grow mint from store-bought bunches any time you see fresh packages on sale. One bunch gives you enough cuttings for several pots or a small garden bed. The plants grow just as strong as anything from a nursery. Try this method next time you buy fresh mint and turn one purchase into a lifetime supply.
Read the full article: Growing Mint: 8 Expert Advice for Success
