Cactus, San Pedro        Trichocereus pachanoi     

(Achuma, San Pedro Cactus, Washuma)

Perennial cactus native to South America. This is a hard-to find offering of seed of San Pedro, which is unusual because most of the San Pedros found growing in the US are from sterile clones.  These seeds, however, are from vibrantly flowered and fruiting cacti that are open-pollinated, fertile and choice.  This blue-green skinned columnar cactus is nearly spineless.  It is a traditional sacrament that can easily be grown in a bright window.  Water regularly during the growing season, but water very infrequently through the winter.  Protect from frost.  Inoculate cactus mix with soil taken from around other growing cacti, and make sure the mix is extremely coarse (incorporate coarse, sharp gravel/pumice) in order to support sprouting seeds as they elongate and germinate.  Sow warm and humid. 

30 seeds/pkt $4.95, Open Pollinated

Those of you who are familiar with starting cacti from seed may ignore these directions. Here are some tips for those of you who are just starting out growing cacti from seed.  You need to use full spectrum grow lights or a good greenhouse.  You can't just germinate them on a windowsill in an apartment--they need bright light and very warm temperatures for germination and growth!  For starters, you can buy cactus mix at the nursery supply store, but most of us make our own.  Here's the common recipe:  50% white pumice, 25% coarse, sharp sand, and 25% organic matter such as coir or compost.  Mix thoroughly and inoculate with a handful of cactus mix taken from around growing cacti--this will provide bacterial/fungal substrate that supports the growth of healthy cacti.  Use gallon pots or smaller.  Fill to 1/2 inch from rim with your cactus mix, then provide a thin (1/4 inch) layer of sifted mix as a seedbed. To make the sifted mix, run your cactus mix through a 1/8 inch screen. Sprinkle seed on surface and mist or water by setting pot in a bowl of water.  Do not dislodge seeds or seedlings by rambunctious watering--its counterproductive.  Many growers stretch plastic wrap over the top of the pot to create a mini-greenhouse effect for germination, then remove the plastic once the seedlings are up and going.  Set the pot in the light greenhouse or below full-spectrum grow lights. Optimal temperature is 70 to 90 degrees F.   Germination is dependent on temperature, light, moon phase and the species you're working with, but generally occurs between 1 and 5 weeks after planting.  If the seeds do not germinate, allow the pot to completely dry out, then start over.  This sometimes jump starts the process.  Once the seedlings appear, keep them propped up with pieces of pumice or gravel.  Remove plastic wrap, but keep evenly watered for the first 6 months.   After that, during the summer, water every 3 to 5 days, allowing the surface to dry between waterings.  Water not at all or very infrequently during the winter. Many growers allow their cacti to grow closely together for the first year or two, then transplant to single pots once they have attained sufficient size to be readily handled.   That's it in a nutshell.  Richo