Seven are too many in one pot. Separate them into single pots and increase pot size as they grow.
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In a pot.
No the seed should be at the first quarter of the pot.
It depends on the size and type of plants you want to grow. For small plants, you can typically plant 2-3 in a medium-sized pot. Larger plants may only fit one per pot. It's important to consider the plants' growth habits and their size at maturity when deciding how many to plant in a pot.
it holds in water?
Yes, you can plant two strawberry plants in one pot as long as the pot is large enough to accommodate both plants and their root systems. Make sure to provide adequate spacing between the plants to allow for proper growth and circulation of air. Regularly monitor the plants for any signs of overcrowding or competition for resources.
No
Any earthworm in a pot will have a deleterious effect on a plant in the pot as the workings disturb the roots.
Chrysanthemums are outdoor plants but sometimes people put them in a decorative pot indoors. They will not last long inside but they can be decorative for a few weeks.
Nerine
Plants can't move unless somebody picks a flower, or moves a pot they are in