What is phaetophyta?

Why are trees painted white? Why does holly leaves have less prickles the higher up the tree you go? How does the prickly pear propagate and spread in its natural environment? Do plants need food to grow? Why deciduos trees lose their leaves? Why is my philodendron falling over and how can I prevent it from happening? What does dandelion means? Is a tomato a fruit or vegtable? What are the growth stages for shrubs? Are zebra horns made of ivory? Why has my basil turned black? How can I transfer a plant from a plastic container to a pot? Primary consumers in a woodland? Does hibiscus flower contain epicalyx? What is 40 acres of pine trees worth in timber? What are the advantages and the disadvantages of fertilizers? What is the common name of Spiranthes gracilis? What country has the most trees in the world? What are the large farms cotton is grown on? A north American woodland plant with yellow rootstock?