Can plants of different ecological groups live in the same community?

Plants from various ecological groups are now found in any community. For example, a forest. Many species and types of plants can be found there. In some communities, different types of plants get along well with each other, and in some cases form a symbiosis, when some plants depend on others and one helps one. Sometimes it may happen that plants appear in the community that can destroy it. Basically, these are parasitic plants or those that secrete toxic substances in the process of life.