Michigan gardeners often wonder when to start lemon grass seeds, and the answer depends on the state’s short growing season. The best time to start lemon grass seeds in michigan is indoors, about 8 to 10 weeks before the last expected frost date. This gives the plants enough time to grow strong before moving them outside.
Lemongrass is a tropical plant that loves warmth. Michigan’s cold springs and early frosts make direct sowing risky. Starting seeds indoors is the only reliable way to get a good harvest.
In this guide, you will learn the exact timing, step-by-step planting methods, and care tips for lemongrass in Michigan. We will cover everything from seed starting to transplanting and harvesting.
Best Time To Start Lemon Grass Seeds In Michigan
The exact timing depends on your specific location within Michigan. The state spans USDA hardiness zones 4 through 6. Northern areas have shorter growing seasons than southern regions.
For most of Michigan, the last spring frost occurs between mid-May and early June. Count backward from that date to find your seed starting window.
- Southern Michigan (zones 5b-6): Last frost around May 10-20. Start seeds indoors between March 1 and March 15.
- Central Michigan (zones 5a-5b): Last frost around May 20-30. Start seeds indoors between March 15 and April 1.
- Northern Michigan (zones 4a-4b): Last frost around June 1-10. Start seeds indoors between April 1 and April 15.
If you miss this window, you can still start seeds later. However, the plants will be smaller and may not produce as many stalks before fall frost.
Why Timing Matters For Lemongrass In Michigan
Lemongrass needs at least 4 to 5 months of warm weather to mature. Michigan’s growing season is only about 120 to 160 days in most areas. Starting seeds indoors gives you a head start of 2 to 3 months.
Without this head start, the plants may not reach harvestable size. They might also fail to develop the thick, flavorful stalks you want for cooking.
Another reason timing matters is temperature. Lemongrass seeds germinate best when soil temperatures are between 70°F and 85°F. Michigan’s spring soil is much colder than that, often below 50°F.
What Happens If You Start Too Early Or Too Late
Starting seeds too early can cause problems. The seedlings may become leggy and weak if they stay indoors too long. They might also outgrow their containers before it is warm enough to plant outside.
Starting too late means the plants will be small when you transplant them. They may not have enough time to grow before the first fall frost arrives in September or October.
The best approach is to aim for the middle of the recommended window. This gives you a balance between strong seedlings and enough growing time.
How To Start Lemongrass Seeds Indoors In Michigan
Starting lemongrass seeds indoors is simple if you follow a few steps. The process takes about 8 to 10 weeks from seed to transplant-ready plant.
Step 1: Gather Your Supplies
You will need a few basic items to get started. Most of these are available at garden centers or online.
- Lemongrass seeds (fresh, from a reputable source)
- Seed starting mix (light and well-draining)
- Small pots or seed trays with drainage holes
- Plastic wrap or a humidity dome
- Heat mat (optional but helpful)
- Grow lights or a sunny windowsill
- Spray bottle for watering
Step 2: Prepare The Soil And Containers
Fill your pots or trays with seed starting mix. Moisten the mix lightly with water. It should feel damp but not soggy.
Make sure the containers have drainage holes. Lemongrass does not like wet feet. Standing water can cause rot and fungal issues.
Step 3: Plant The Seeds
Lemongrass seeds are very small. Sprinkle them evenly on top of the soil. Do not bury them deeply. A light dusting of soil or vermiculite is enough.
Press the seeds gently into the soil to ensure good contact. Mist the surface with water using a spray bottle.
Step 4: Provide Warmth And Moisture
Cover the pots with plastic wrap or a humidity dome. This keeps the moisture in and creates a mini greenhouse effect.
Place the pots on a heat mat set to 70°F to 85°F. If you do not have a heat mat, put them in a warm spot like the top of a refrigerator or near a heater.
Check the soil daily. Mist it if it starts to dry out. Seeds should germinate in 7 to 14 days.
Step 5: Provide Light After Germination
Once the seeds sprout, remove the plastic cover. Move the pots to a bright location. A south-facing window works, but grow lights are better.
Keep the lights 2 to 4 inches above the seedlings. Run them for 12 to 16 hours per day. This prevents the plants from getting leggy.
Step 6: Thin And Transplant Seedlings
When the seedlings have two sets of true leaves, thin them out. Keep the strongest ones. Space them about 2 inches apart in the tray.
After 4 to 6 weeks, transplant each seedling into its own pot. Use a 4-inch pot with good drainage. This gives the roots room to grow.
Caring For Lemongrass Seedlings Before Transplanting
Lemongrass seedlings need consistent care while they are indoors. They are sensitive to cold and drying out.
Watering And Humidity
Water the seedlings when the top inch of soil feels dry. Use room-temperature water to avoid shocking the roots.
Lemongrass likes humidity. If your home is dry, mist the plants occasionally. You can also place a tray of water near them.
Fertilizing
Start fertilizing when the seedlings are about 4 weeks old. Use a balanced liquid fertilizer diluted to half strength. Apply it every two weeks.
Do not over-fertilize. Too much nitrogen can cause weak, floppy growth. Stick to the recommended dosage.
Hardening Off
About 7 to 10 days before transplanting, start hardening off the seedlings. This means gradually exposing them to outdoor conditions.
Begin by placing them outside in a sheltered spot for a few hours each day. Increase the time gradually. Bring them inside at night.
After a week, they should be ready to stay outside full-time. Watch the weather forecast and avoid cold nights.
Transplanting Lemongrass Outdoors In Michigan
Transplanting is a critical step. The timing and method affect how well the plants establish.
When To Transplant
Wait until all danger of frost has passed. The soil temperature should be at least 60°F. In most of Michigan, this is between late May and early June.
Check the 10-day forecast before transplanting. Avoid planting during a cold snap or heavy rain period.
How To Transplant
Choose a sunny location with well-draining soil. Lemongrass needs full sun, at least 6 to 8 hours per day.
Dig a hole slightly larger than the pot. Place the seedling in the hole at the same depth it was growing in the pot. Fill in with soil and press gently.
Space plants about 18 to 24 inches apart. Lemongrass grows into large clumps, so give them room.
Aftercare
Water the transplants thoroughly after planting. Keep the soil moist for the first week to help roots establish.
Apply a layer of mulch around the plants. This helps retain moisture and keeps the soil warm.
If a late frost is predicted, cover the plants with a frost cloth or row cover overnight.
Growing Lemongrass In Michigan: Ongoing Care
Once your lemongrass is in the ground, it needs regular care to thrive. Michigan’s summers can be hot and humid, which lemongrass loves.
Watering
Lemongrass needs consistent moisture. Water deeply once or twice a week, depending on rainfall. The soil should stay moist but not waterlogged.
During dry spells, water more often. Mulching helps reduce evaporation.
Fertilizing
Feed the plants every 4 to 6 weeks during the growing season. Use a balanced fertilizer or compost tea. Stop fertilizing in late August.
Too much fertilizer late in the season can encourage tender growth that may be damaged by frost.
Pest And Disease Management
Lemongrass is generally pest-resistant. However, spider mites and aphids can appear during hot, dry weather. Wash them off with a strong spray of water.
Fungal diseases are rare but can occur in wet conditions. Ensure good air circulation around the plants. Avoid overhead watering.
Harvesting Lemongrass In Michigan
Harvesting is the reward for your efforts. You can start harvesting when the stalks are about 12 inches tall and thick at the base.
When To Harvest
In Michigan, the first harvest is usually in late July or August. You can continue harvesting until the first fall frost.
Cut stalks at ground level using a sharp knife or pruners. Take only a few stalks from each plant at a time. This allows the plant to keep growing.
How To Store Lemongrass
Fresh lemongrass can be stored in the refrigerator for up to 2 weeks. Wrap the stalks in a damp paper towel and place them in a plastic bag.
You can also freeze lemongrass. Chop it into pieces and store it in a freezer bag. It will keep for several months.
Drying is another option. Hang the stalks in a warm, dry place. Once dry, store them in an airtight container.
Overwintering Lemongrass In Michigan
Lemongrass is a perennial in warm climates, but it cannot survive Michigan winters outdoors. You have two options: treat it as an annual or overwinter it indoors.
Option 1: Grow As An Annual
Many Michigan gardeners treat lemongrass as an annual. They start new seeds each spring and let the plants die after the first frost.
This is the simplest approach. You get a fresh crop each year without the hassle of overwintering.
Option 2: Overwinter Indoors
If you want to keep your plants for multiple years, bring them indoors before the first frost. Dig up a clump and pot it in a large container.
Place the pot in a sunny window or under grow lights. Water sparingly during winter. The plant will go dormant and may lose some leaves.
In spring, move it back outside after the last frost. It will regrow quickly.
Common Problems And Solutions
Even with good care, you may encounter issues. Here are some common problems and how to fix them.
Slow Germination
Lemongrass seeds can be slow to germinate. If they do not sprout within 3 weeks, check the temperature. They need consistent warmth.
Also, make sure the seeds are fresh. Old seeds have lower germination rates.
Leggy Seedlings
Leggy seedlings are caused by insufficient light. Move them closer to the light source or increase the hours of light.
You can also use a fan to strengthen the stems. Gentle air movement mimics outdoor conditions.
Yellow Leaves
Yellow leaves can indicate overwatering, underwatering, or nutrient deficiency. Check the soil moisture first. Adjust watering as needed.
If the soil is fine, try fertilizing with a balanced fertilizer.
Frequently Asked Questions
Can I start lemongrass seeds directly in the ground in Michigan?
It is not recommended. The soil is too cold in spring, and the growing season is too short. Starting seeds indoors gives you a much better chance of success.
How long does it take for lemongrass to grow from seed?
From seed to harvest, it takes about 4 to 5 months. Starting indoors in March or April allows you to harvest by late summer.
What is the best lemongrass variety for Michigan?
East Indian lemongrass (Cymbopogon flexuosus) is the most common variety. It grows well in containers and gardens. West Indian lemongrass (Cymbopogon citratus) is also a good choice but may be slightly less cold-tolerant.
Can I grow lemongrass in a pot in Michigan?
Yes, container growing is ideal. You can move the pot indoors during cold weather. Use a large pot, at least 12 inches in diameter, with good drainage.
Do I need to fertilize lemongrass?
Yes, regular feeding helps the plants grow strong. Use a balanced fertilizer every 4 to 6 weeks during the growing season. Stop fertilizing in late summer.
Final Tips For Success
Growing lemongrass in Michigan is rewarding. The fresh flavor is far superior to store-bought. With the right timing and care, you can enjoy a bountiful harvest.
Remember to start seeds indoors at the right time. Keep the seedlings warm and well-lit. Harden them off before transplanting. And protect them from frost.
If you follow these steps, you will have healthy lemongrass plants that produce stalks all summer. You can use them in teas, soups, stir-fries, and more.
Michigan’s climate may be challenging for tropical plants, but with a little planning, you can grow lemongrass successfully. Start your seeds at the best time, and you will be rewarded with a unique and useful addition to your garden.
One last tip: keep a garden journal. Note when you started seeds, when you transplanted, and how the plants performed. This will help you refine your timing each year.
Happy gardening in Michigan. Your lemongrass will thank you.