Growing seedlings indoors can be a rewarding experience, but it can also come with its challenges. If youโ€™ve noticed your seedlings turning leggy (overly tall stems that bend over from the weight of the tiny leaves), wilting, or even turning purple, donโ€™t worryโ€”youโ€™re not alone. These signs often indicate that something is off in your growing setup. Letโ€™s break down what might be causing the issue and how you can fix it.

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โ€˜Fix Leggy Seedlings with These 3 Simple Tips?’

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The Mix to Fix those Leggy Seedlings

Fix Leggy Seedlings with These Simple Tips - 5 strong kale seedlings laid out on the dirt ready to plant.

One of the most common mistakes when starting seedlings indoors is using a poor-quality seed starting mix. A good mix is essential for seedling health. You want a well-draining, nutrient-rich medium to encourage strong root development. My go-to recipe is 4 parts screened compost, 1 part perlite, 1 part vermiculite, and 2 parts coconut coir. This combination ensures proper aeration and moisture retention without the risk of sogginess.

If youโ€™re only using coco coir or peat moss (like the pods) to grow your seedlings, you need to know that these substrates have no nutrition for your seedlings. So your seedling will grow to the first set of leaves (the cotyledons) but quickly die thereafter from lack of nutrition. To keep your seedlings strong, youโ€™ll need to add liquid nutrients.

Optimal Lighting for Seedlings

Seedlings require ample light to grow strong and healthy. Without it, they become leggy, stretching toward the light source. If youโ€™re growing indoors, consider using grow lights for 12-16 hours per day minimum. Place the light source close enough to prevent stretching but far enough to avoid burning the delicate seedlings.ย 

Managing Algae Growth

Fix Leggy Seedlings with These 3 Simple Tips - 5 strong kale seedlings laid out on the dirt ready to plant.

Algae thrives in moist, warm environments and can quickly overtake your seedlings. While not directly harmful, algae can steal nutrients from the soil and impede seedling growth. To prevent this, keep the top of the soil free from excess moisture and ensure your growing area has proper airflow.

Recommendations for Healthier Seedlings
By following these stepsโ€”starting with the right soil mix, providing adequate light, avoiding overwatering, and managing algaeโ€”youโ€™ll give your seedlings the best chance to thrive.ย 

If you notice persistent issues, consider adjusting your setup. Every plant is unique, and fine-tuning your approach will lead to better results. Take the time to evaluate your setup and make adjustments where needed. Happy growing!

 

Would you rather watch than read

‘Fix Leggy Seedlings with These 3 Simple Tips?’

Watch the video below instead!

Growing Seedlings Indoors: Case Study in Brooklyn