Growing microgreens at home is a fun and rewarding experience, but it can also be frustrating when things don't go as planned. In this blog post, we'll explore some common issues that arise when growing microgreens and how to troubleshoot them.
Issue #1: Mould
Mould is a common issue that can occur when growing microgreens. It is often caused by overwatering or high humidity levels. To prevent mould, make sure your grow tray is in an area with good air circulation and avoid overwatering. Remove any patches of mould as soon as you notice them. If you see white fuzz surrounding every single seedling shortly after germination it is likely to be root hairs, not mould, so don't worry too much! You'll know it's mould if it's visible in one or more patches (rather than on every stem). If you're not sure, send a photo to hi@littleleaf.uk and we'll try to help you troubleshoot.
Issue #2: Uneven Growth
Uneven growth can occur when seeds are not distributed evenly or when the coir is not level. To prevent this, make sure to level the coir before seeding and distribute the seeds evenly. You can also gently press the seeds into the coir to ensure they are in contact with the coir and receiving adequate moisture. Another possible reason for uneven growth is if your grow tray is sitting on an uneven surface, causing the water to pool at one side of the tray. Try to find a level surface for your grow tray to make sure all the seedlings get adequate water.
Issue #3: Leaning
Leaning occurs when the microgreens are consistently stretching in one direction to reach the light, for example on a windowsill. It's not a huge issue but can make it harder to harvest them. One way to minimise leaning is to turn the grow tray around every time you water it.
Issue #4: Pests
Pests such as aphids, mites, and thrips can damage and kill microgreens. The easiest way to avoid pests is to grow your microgreens indoors, and not too close to any houseplants that might be carrying pests.
Issue #5: Falling over
The most common reason for microgreens falling over is that they are thirsty. The good news is that if you catch it quickly and give them a good drink they should perk back up in just a few hours! It's also possible for microgreens to fall over when they are overgrown. If this is the case then your best course of action is to harvest them as soon as you can.
If you encounter an issue that you haven't managed to resolve by reading this, please feel free to send a photo of the problem to hi@littleleaf.uk and we will try our best to help!