Flowers that grow in gravel are Sedums, self seeded Dianthus, foxgloves, California poppies, moss rose, spring flowering phlox, and Hollyhocks.
No plants or flowers will grow in gravel , they need soil to grow.
pizza
Yes. You can layer substrate in any tank. However, if your plants can grow fine in gravel, they can grow fine in colored gravel, just make sure the colored gravel is safe for aquariums.
soil
Most aquatic plants require gravel, as they have roots, and will need to grow their roots and attach themselves. There are however lots of floating plant species that do not require gravel, such as duck weed.
Sand and gravel generally lack nutrients and water retention capacity necessary for plants to grow. Additionally, the loose structure of sand and gravel can prevent roots from establishing a strong foundation for plants to grow effectively.
Top soil.
it doesnt have soilin gravel.
Yes, plants can grow in gravel, though not well. If you try to grow many plants in gravel as soil a couple may grow tall but most will not grow at all. So, it is possible, but not a good idea. I did a science experiment at school growing plants in different types of soil, and gravel did the worst quantity-wise, but a couple did grow almost as tall as the ones grown in more common soils.
Different types of soil, has different types of nutrients. So for ex. if gravel has more nutrients it would grow better, than in the sand.
NO
yes