What is ferns basic mode of nutrition?

Why is it hard to produce new varieties of trees? How are kids apart of a rimu trees? What type of tree grows faster hardwood or softwood? What does mulch do for trees? What is an alkekengi? What makes a rose red? What do tree's smell like? Can you prune half a branch on oak tree? Can you use salt to kill a sap tree? Can you cut lucky bamboo from the bottom without harming the plant? Is a yew tree a real tree? Where do dahlia hortensis live? What solvent dissolves silk? Does dwarf burning bush need Miracid or Miracle Gro? How can I effectively treat and prevent brown spots on leaves of my houseplant? How tall can a yucca plant grow? How long does it take for a pineapple plant to produce a pineapple? How many years does it take for a tree to grow to its full maturity? What is 'sunflower' in Portuguese? What organisms are in the ring-tailed lemurs food chain?