I'm trying to grow some rocket in some tubs indoors but they seem to be doing quite poorly. The seeds sprout, grow a bit then just seem to wither(?) Im I under/over watering? Should they be outdoors? Have I sown too close together?
Probably overwatering, but it is difficult to say for sure. There's a thing called "damping off" - google it and compare to what you're seeing.
Having had arugula which has self-seeded, I can say that it'll grow with closely planted seeds no problem. May not get as large as properly spaced plants, but it does fine.
Since we don't know how much water you put on it is hard to say but out of sun with too much water and they may be getting fungus. Let the top 1cm of soil dry out (almost wilting) before you water. The frequency will depend on the temperature, the sunlight and vigour of the plants.
Yes. The most likely problem is lack of light, leafy greens will often tolerate part sun, strong light but no sun will make them inferior and weak light will make them hopeless. People forget that there is a huge difference in energy available from full sun to low light - in part because our eyes adapt and minimise the apparent difference.
Have I
In good conditions this will make them compete and all will be smaller but they ought to still be healthy. If the light is already too poor and they are shading each other you have compounded the problem.
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