Biomass is fuel that is developed from organic materials, a renewable and sustainable source of energy used to create electricity or other forms of power. Some examples of materials that make up biomass fuels are: 1  scrap lumber; 2  forest debris; 3  certain crops;
At most, some flowers linger into part of the following day. A large cereus cactus may have several blooms, but the plant's entire bloom season may last only two days. Some genera bloom in spring or summer, while others flower in early fall.
Healthy Christmas cactus foliage is bright, glossy green. The Christmas cactus (Schlumbergera bridgesii) earned its common name with the timing of its bloom, which occurs at Christmas if the plant has been given 8 weeks of long nights -- 13 hours or more of dark - for eight weeks preceding Christmas.