When you’re growing microgreens or sprouts at home, you might notice a white fuzz or hair-like growth on your seeds. At first glance, it can be a bit confusing. Is it the healthy root hair of your microgreens, or could it be mould starting to form? Understanding the difference is important to ensure your sprouts are safe to eat and are growing properly. Let’s take a closer look at root hair and mould, and how to tell them apart.
What Is Root Hair?
Root hair is a normal and healthy part of the growing process for many plants, including sprouts and microgreens. These tiny, thin hairs grow from the roots of the plant as it develops. Their job is to help the plant absorb water and nutrients from the soil or growing medium.
When you sprout seeds, you are essentially encouraging the seed to start growing. As the seed starts to sprout, the first tiny root begins to form. This root will eventually grow longer, and the root hairs will appear. These hairs look like a soft, white fuzz that covers the root. It’s completely normal and a sign that your sprouts are growing healthily. Root hair is usually thin, delicate, and white in color. It doesn’t usually spread to the surface of the seeds or the growing medium.
What Is Mould?
Mould, on the other hand, is a type of fungus that can grow in certain conditions. It often appears as fuzzy, white, grey, or even green patches that spread across the surface of seeds or the growing medium. Mould is not a good sign – it means something is wrong with your growing environment.
Mould thrives in moist, warm conditions, especially if there’s too much water or not enough air circulation. If you leave your sprouts in water for too long or if they are not draining properly, the excess moisture can encourage mould growth. Mould can also develop if your sprouts are in a space that is too warm or if they are overcrowded in their growing tray.
How to Tell the Difference Between Root Hair and Mould
Location
Root hair grows from the root of the plant and stays near the seed or growing medium. It is often attached to the roots and doesn’t spread much. Mould, however, spreads across the surface, often covering the seeds and growing medium in patches.
Appearance
Root hairs are typically fine, soft, and look like tiny, white threads. Mould, on the other hand, can look like a fuzzy blanket covering parts of the seeds or growing medium. Mould may also appear as a grey, green, or black color as it develops.
Texture
Root hairs feel soft and smooth when you touch them, as they are delicate parts of the plant’s root system. Mould can feel slimy or damp and may be sticky or powdery, depending on the stage of growth.
Smell
If you notice a musty or sour smell around your sprouts, it could be a sign of mould. Root hairs, however, don’t produce any noticeable odour.
How to Prevent Mould on Sprouts
If you suspect that mould is forming, it’s important to take action quickly. Here are some simple tips to prevent mould from ruining your sprouts:
Proper Watering
Ensure you are not over-watering your sprouts. Make sure the growing medium is moist but not soaked. If the sprouts are too wet, mould can grow.
Good Air Circulation
Mould likes warm, stagnant air. Make sure your sprouts are getting enough airflow. If you’re growing them in a container, make sure the container has holes for ventilation.
Cleanliness
Always clean your growing trays and tools thoroughly before using them. Mould spores can be left behind on surfaces, so starting with a clean setup is important.
Correct Temperature
Keep your sprouts in a cool, well-ventilated space. The ideal temperature for growing microgreens is usually between 18°C to 22°C (65°F to 72°F).
Use a Tray with Drainage
Using a tray with proper drainage will help prevent water from pooling at the bottom, which can create the perfect environment for mould.
Click here to find out more information about identifying mould vs root hairs.
What to Do if You Have Mould
If you find mould growing on your sprouts, don’t panic! You can try to remove it by gently washing your sprouts with water. If the mould is severe, it may be best to start over with fresh seeds. Throw away any sprouts that have mould on them, as consuming mouldy sprouts can be harmful to your health.
Conclusion
In summary, root hair and mould can look similar, but they are very different. Root hair is a normal part of your sprouts’ growth, while mould is a sign of an unhealthy environment. By understanding the difference, you can help ensure that your sprouts grow strong and healthy. Keep your growing area clean, dry, and well-ventilated, and you should have no trouble enjoying delicious, nutritious microgreens and sprouts. Happy growing!
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