NOTE: Not all yearlings are showing monstrose growth yet. Act fast as the monstros babies have almost sold out alredy!

TPM x OP

TPM x OP" refers to a hybrid cactus where one parent is a specific cultivar and the other parent is unknown due to open pollination. Let's break down what each part means:

1. TPM (Trichocereus Peruvianus Monstrose / Trichocereus Pachanoi Monstrose)

"Monstrose" (f. monstros): This indicates a mutated growth habit where the cactus grows in an irregular, distorted, or "melted" fashion, rather than the typical columnar form with distinct ribs. This mutation is genetic and can be quite varied, leading to unique and often sculptural appearances.

"Peruvianus" or "Pachanoi": TPM is generally understood to refer to a Monstrose form of either Trichocereus Peruvianus (Peruvian Torch) or Trichocereus Pachanoi (San Pedro Cactus). Both are well-known species within the Trichocereus genus (now often classified under Echinopsis).

Trichocereus Peruvianus: Known for its typically longer spines and often bluer epidermis.

Trichocereus Pachanoi: Generally has shorter spines (sometimes nearly spineless) and a more green to glaucous green epidermis.

Cultivar Status: TPM is a recognized cultivar (cultivated variety) due to its unique and stable Monstrose growth pattern, which is preserved through vegetative propagation (cuttings).

2. x OP (Open Pollinated)

"x": In botanical nomenclature for hybrids, "x" indicates a cross between two parents.

"OP" (Open Pollinated): This is a crucial term. It means that the TPM was the mother plant (the one that produced the seeds/fruit), but the father plant (the source of the pollen) is unknown.

This usually happens when a plant flowers and is pollinated naturally by insects or wind from any other Trichocereus (or closely related Echinopsis) flowering in the vicinity.

Because the father plant is unknown, the genetic outcome of the seedlings can be quite variable. You might get offspring that show strong Monstrose traits, some that are more normal in growth, and a wide range of characteristics inherited from the unknown pollen donor.

What to Expect from a 'TPM x OP' Hybrid:

Genetic Diversity: This is the most significant aspect. Each seedling from an 'OP' cross will be genetically unique. While the mother is 'TPM', the "father" could be almost any other Trichocereus species or hybrid that was flowering nearby and compatible. This leads to a fascinating array of different forms, spine characteristics, colors, and growth rates among the seedlings.

Potential for Monstrose Traits: Since TPM is the mother, there's a good chance some seedlings will inherit the Monstrose gene and display varying degrees of irregular growth. However, it's not guaranteed that all or even most seedlings will be Monstrose, as the mutation might be recessive or influenced by the unknown father's genetics. You might see regular columnar growth, semi-Monstrose forms, or even crested forms.

Appearance: The appearance will vary widely. Some seedlings might lean towards the characteristics of T. Peruvianus (bluer, longer spines), while others might resemble T. Pachanoi (greener, shorter spines) or whatever the unknown father might have been.

Growth: Generally, Trichocereus are vigorous growers, and hybrids often exhibit "hybrid vigor," meaning they can grow even faster than their parent species.

Collectability: 'TPM x OP' seeds and seedlings are popular among collectors and enthusiasts who enjoy the surprise and unique outcomes of open-pollinated crosses. It's a bit like a genetic lottery, where you might discover a truly special and unique plant.

Cultivation and Care:

Like most Trichocereus species, 'TPM x OP' seedlings and mature plants will thrive with:

Well-Draining Soil: A mix heavy in inorganic materials (pumice, perlite, coarse sand) is essential to prevent root rot.

Plenty of Sunlight: Full sun to partial shade, with gradual acclimatization to direct sun.

Infrequent Watering: Allow the soil to dry out completely between waterings, especially in cooler months.

Protection from Frost: They are not frost-hardy.

In summary, 'Trichocereus CV TPM x OP' represents a batch of unique, seed-grown Trichocereus plants with a known Monstrose mother ('TPM') and an unknown pollinator. This makes for an exciting and unpredictable cultivation experience, as each seedling can be a distinct genetic expression.