We have taken a step farther and have consciously built our greenhouses to be as green as they could be. All our greenhouses are constructed in bamboo. Yes, bamboo! Not those tall, rigid, imposing steel structures, not even concrete, not even hard wood. We do not cut trees!
Prevents global warming: Our greenhouses made entirely out of bamboo captures carbon dioxide and stores it. This is because planted bamboo gets CO2 from the atmosphere. When a plant breathes in CO2 and exhales O2, the plant takes the C-carbon atom and converts it into plant matter through photosynthesis, storing the carbon in the plant. When the plant dies and decays, the carbon is eaten by bacteria or insects. The greenhouses could then be seen as a carbon sink, storing the carbon in the bamboo poles.
Grows 3-7 times faster than trees: Bamboo is not a tree. It is a grass. The fastest growing bamboo can grow up to 4 feet a day!
Extremely strong: Bamboo has twice the compression strength of concrete and roughly the same strength-to-weight ratio of steel. Imagine that! Our bamboo poles are able to withstand strong winds and earthquakes.
Weather, termite and mold resistant: Our bamboo greenhouses are naturally designed and treated with natural elements to be weather, termite and mold resistant. Our bamboo poles are treated with non-toxic borates to prevent termite and powder post beetle infestations as well as decaying fungi. Borates have been used internationally for the past 60 years as a safe and effective treatment to stop insects and decay.
HOW DO WE DO IT? Our bamboo greenhouses are made entirely of bamboo. The variety we use is the local thorny bambusa variety. We cut from the bottom of the trunk since this is the hardest part and very good for posts. We cut at the right age , this is when the bamboo will start to have like a white powdery substance around the lower portion of the trunk. These poles are usually at least 2 years old. To secure the bamboo poles, we scorch it and then bore it into the soil. We bury it to a height of 1-1.5 meters. To finally secure it, we put a minimal amount of concrete into the hole. To put the poles together, we do not even use nails or screws. The bamboo poles are held together by bamboo pegs. Aside from sustainability, the pegs allow the bamboos to sway with the wind. The greenhouses are then roofed with greenhouse UV plastic film. To attach the plastic to the poles, we need to use nuts and bolts. An important component is that the bamboo poles must be treated. We use borax and/or boric acid to treat our bamboo poles. This is quite labor intensive but you can do it with patience. (There are a number of Youtube videos you can check to guide you.)
We have designed and positioned our greenhouses to ensure that we use the least amount of energy for our crops. Our bamboo buildings use natural ventilation, and rely on the direction, strength or gentleness of winds. The greenhouses are 8 to 10 feet tall, have open sides and vents in the center, and face the wind. With this, we eliminated the need for energy-powered fans. Not only these, the bamboo poles are designed in a way that we can harvest our rainwater, which we in turn, use to irrigate our plants. The rainwater we get from the greenhouses are channeled to a water impounding pond or to plant beds that are covered with thick mulch.
We are the proud pioneers of these creative innovation in the Philippines. We only have to thank nature and the creativity of our farmers for our brilliant yet delightful bamboo houses.