Grow turnip greens in yogurt cups 45 day

Why This Method Works

There's a special joy in harvesting your own food, even if it's just a small batch. For those of us navigating the concrete jungle, optimizing every inch is key. That's why I'm so excited to share my go-to method for how to grow turnip greens in yogurt cups. It's a fantastic, low-investment way to get fresh, nutritious greens right on your windowsill or balcony.

The beauty of this method lies in its simplicity and efficiency. Yogurt cups, often discarded, are perfectly sized for individual turnip plants in their early stages. Turnip greens, unlike their rooty counterparts, don't require deep soil for extensive root development when grown for their leaves. They thrive in shallow containers, making these repurposed cups ideal. This approach is also incredibly forgiving for beginners. It allows you to experiment with a small number of plants without committing to large setups, minimizing waste if things don't go perfectly the first time.

From a scientific standpoint, growing in individual containers gives you precise control over each plant's environment. You can manage moisture levels more effectively, and if one plant struggles with pests or disease, it's easier to isolate and treat without affecting its neighbors. The "45-day" timeline is also a significant advantage for apartment dwellers. It means a quick turnaround from seed to harvest, providing a consistent supply of fresh greens without a long-term commitment of space. It's truly container gardening at its most accessible.

What You'll Need

Gathering your supplies is the first step to success. Here’s a detailed list:

• Container: Yogurt Cups (6oz-8oz size): Aim for at least 6-8 cups if you want a decent harvest. Punch 3-4 drainage holes in the bottom of each cup using a small nail or a drill bit. Good drainage is non-negotiable to prevent root rot.
• Growing System: Container Gardening Setup: While yogurt cups ARE the containers, you'll want saucers or a tray underneath them to catch excess water. A simple plastic cafeteria tray or old cookie sheets work wonderfully.
• Turnip Seeds: Look for varieties specifically marked for "greens" if possible, as they are bred for foliage production. 'Purple Top White Globe' is a classic choice, but any turnip seed will yield greens. I usually buy a packet from a reputable seed company.
• Potting Mix: A high-quality, well-draining potting mix is crucial. Avoid garden soil, as it can compact in containers and often harbors pests. Look for mixes designed for containers, possibly with perlite or vermiculite for aeration. You won't need a huge bag for this project, perhaps a 1-quart bag if you're doing just a few cups.
• Spray Bottle: Essential for gentle watering of seedlings.
• Small Trowel or Spoon: For carefully handling soil.
• Measuring Spoon: For seeds.
• Optional: Grow Light: If your apartment lacks ample natural light (common for urban gardeners), a small LED grow light can make a huge difference in growth and preventing leggy seedlings. A simple clip-on lamp with an LED bulb will suffice.

When it comes to potting mix, understanding how much you need can be tricky. Don't eyeball it and end up with too little or too much! For precise calculations, especially if you're scaling up, I highly recommend checking out our soil volume calculator to ensure you have just the right amount for your cups or other containers.

Step-by-Step Guide

Days 1-3: Setup & Sowing

• Prepare your cups: Ensure all your yogurt cups have adequate drainage holes.
• Fill with soil: Fill each cup with potting mix, leaving about an inch from the rim. Gently tap the cups to settle the soil.
• Sow the seeds: Create a small depression (about 1/4 inch deep) in the center of each cup. Place 3-4 turnip seeds in each depression. I always plant a few extra to account for germination rates and potential duds. Cover lightly with soil and gently pat down.
• Initial watering: Use your spray bottle to thoroughly moisten the soil. You want it damp, not waterlogged.
• Placement: Place cups in a warm spot with indirect light. A windowsill is perfect. If you have a grow light, place them under it for about 12-14 hours a day.
• Maintain moisture: Keep the soil consistently moist but never soggy. A light misting once or twice a day should do the trick.

Days 4-7: Initial Growth & Thinning

• Germination: You should start seeing tiny green sprouts emerging! This is always such an exciting moment. Not all seeds will germinate, and that's completely normal.
• Thinning (important!): Once seedlings have their first set of true leaves (the second set of leaves to appear, distinct from the initial round cotyledons), it's time to thin. Gently snip off all but the strongest, healthiest-looking seedling in each cup at the soil line. Resist the urge to pull them out, as this can disturb the roots of the one you want to keep. This gives your chosen seedling ample space and resources to thrive.
• Light & Water: Ensure they continue to get plenty of light. If they start looking leggy (tall and spindly), they need more light. Continue to water as needed to keep the soil moist.
• Troubleshooting - Leggy Seedlings: If your seedlings are stretching towards the light, they aren't getting enough. Move them closer to the window or grow light. If using a grow light, reduce the distance between the light and the plants.

Days 8-21: Development & Feeding

• Growth spurt: Your turnip greens will start to grow noticeably larger. The true leaves will expand, and you'll see more foliage developing.
• Fertilizing (optional, but recommended): If your potting mix didn't have a slow-release fertilizer, you can start feeding with a diluted liquid organic fertilizer (half strength) every two weeks. Something balanced, or slightly higher in nitrogen, is good for leafy greens.
• Watering: As the plants grow, they'll need more water. Check the soil daily by sticking your finger about an inch deep. If it feels dry, it's time to water. Water until you see a little come out the bottom drainage holes, then empty the saucer.
• Pest Watch: Keep an eye out for common indoor pests like fungus gnats (often a sign of overwatering) or spider mites. A gentle spray of neem oil or insecticidal soap can help if detected early.

Days 22-45: Harvesting & Continuous Yield

• First Harvest: Around day 30-35, you can start your first light harvest. Identify the outermost, largest leaves. Using clean scissors, snip off these leaves, leaving the inner, smaller leaves to continue growing. Never take more than 1/3 of the plant's foliage at a time. This allows the plant to produce more.
• Consistent Watering & Feeding: Continue your watering and feeding schedule. Regular nutrients are vital for continuous production of greens.
• Successive Harvests: You can typically harvest once a week, or every few days, depending on how quickly your greens are growing. The "45-day" mark usually signifies a robust plant that has given you several cuttings and is at its peak. Turnip greens have a slightly peppery, robust flavor that's wonderful in stir-fries, salads, or steamed.
• Troubleshooting - Yellowing Leaves: This can indicate overwatering, underwatering, or a nutrient deficiency. Check soil moisture first. If it's a nutrient issue, try a light feeding.

Common Mistakes to Avoid

1. Overwatering: This is, hands down, the most common beginner mistake. Constantly soggy soil suffocates roots and leads to rot. Always check the soil moisture before watering. Let the top inch dry out slightly.
2. Planting Too Many Seeds and Not Thinning: While it's tempting to want every sprout, overcrowding leads to weak, spindly plants competing for limited resources. Thinning to one strong seedling per cup is crucial for robust growth.
3. Insufficient Light: Turnip greens need at least 6 hours of direct sunlight, or 12-14 hours under a grow light. Without enough light, plants become leggy and produce sparse, pale leaves.
4. Ignoring Drainage Holes: Without proper drainage, water sits and drowns the roots. Always ensure your yogurt cups have adequate holes, and that you empty any standing water from the saucers.

Pro Tips for Maximum Success

1. Succession Planting: To ensure a continuous supply of greens, don't plant all your seeds at once. Sow a new batch of 2-3 cups every 2-3 weeks. This way, as one set of plants starts to slow down, another is ready for harvest.
2. Nutrient Cycling with Compost Tea: Instead of solely relying on synthetic fertilizers, try making a simple compost tea. Steep a handful of finished compost in water for a day or two, then use the strained liquid to water your plants. It provides a gentle, organic nutrient boost and beneficial microbes.
3. Gentle Pest Control with Soap & Water: Before reaching for harsh chemicals, for small infestations of aphids or spider mites, a spray bottle filled with water and a tiny drop of dish soap (not detergent) can often dislodge or deter them. Test on a small leaf first.
4. Rotate Your Cups: If you're growing on a windowsill, rotate your cups daily or every other day. This ensures all sides of the plant get even exposure to the light, leading to more uniform growth.

You now have all the practical knowledge to start your own mini turnip green farm in those humble yogurt cups. It's an incredibly satisfying journey, and the fresh, peppery greens you harvest will taste all the better for your efforts. Don't let limited space deter you from the joys of growing your own food. Start today, and within 45 days, you'll be enjoying a delicious harvest! And remember, for any precise measurements like knowing exactly how many plants can fit in a given space, check out our free calculators, such as the plant spacing calculator to optimize your layout.