Tuesday, August 4, 2009
Trichocereus Bridgesii- San Pedro Cactus- 20 seed pack!
Purchase the Trichocereus Bridgesii- San Pedro Cactus here at seedbloc.com
We also sell on eBay. Visit My eBay Store: SeedBloc
We sell an assortment of exotic seeds including: Carnegiea Gigantea (Giant Saguaro), Astrophytum Asterias "Super Kabuto".
Each lot includes 20 T. bridgesii seeds. Trichocereus bridgesii, also classified as Echinopsis lageniformis, is a bluish-green columnar cactus native to Boliva, which is also where these seeds are from. It resembles the more common San Pedro cactus (T. pachanoi) but typically has fewer, wider ribs and longer spines. In fact, many references to San Pedro in Bolivia are believed to actually be referring to bridgesii rather than pachanoi. This cactus has gained much popularity among cactus collectors in recent years. Like pachanoi, it has huge, white blooms that make it an attractive andscaping cactus. It grows a little bit slower than pachanoi but is still a rapid grower, making it one of several trichocereus species that work well as a grafting stock for slower-growing cacti such as astrophytum and ariocarpus. It can reach fifteen feet in height and tends to produce offsets rather easily. T. bridgesii is also easy to grow from seed, but its seedlings are more prone to turning purple than many other trichocereus species when exposed to sunlight. When this occurs, be sure to reduce their exposure. It is hardy to about 30 degrees Fahrenheit and should only be watered during active growth when the soil has dried out. During the winter in areas where temperatures are too cold, plants should be brought inside where they will go dormant (stop growing). Prior to entering dormancy (late September-early October), watering should be slowly reduced until it reaches none. Plants should be brought indoors and stored in a cool, dry, dark place. Since it is not growiing, it does not require any of these essentials. When breaking dormancy, a reverse process can be applied. This will ensure nice, even growth to your cacti and reduce the chance of infection due to overwatering when the cactus’s immune system is at rest.
Seeds should be germinated in a fine sandy soil at about 70-75 degrees. A commercial potting mix with the larger material strained out is ideal. Flatten out the soil and then put a thin layer of loose soil above it. Sow the seeds on the surface and press in very lightly. They need light to germinate. Mist the soil to keep it moist and cover with clear plastic. Ideally, the covering should not be flat across the top because it will cause the water to drip back on the young seedlings, which sometimes causes rot. Something like a sandwich bag often makes a better “tent” because the water will run down the sides more easily. The soil should not be allowed to dry out while the plants are seedlings. Use a mister if the soil does get dry. Place the seedlings on a heat mat (ideally) and in bright light. Placing the seeds just a few inches from fluorescent lights is ideal for starting seedlings, although natural light will work too. Note that using a heat mat will cause more evaporation, which may require more attention. Be sure to air out the seedlings once a day for best results.