PlantFiles: Mariposa del Campo (Countryside Butterfly)
Alstroemeria pulchra

Alstroemeria is known to have skin irritants in its sap. One should be careful with all species or hybrids to wear polyacrylonitrile glovesand wash them when you are finished handling these plants. Eye irritation might be quite serious. Refer to the comments you will find by entering a google search for "alstroemeria poisonous".
I am uncertain whether I have had any problems with this plant but caution is advised.

skoorb

These lovely Alstroemerias are most likely to bloom from the second year on when grown from seeds. They like full sun to light shade, good drainage and should be fertilized once a year with fully decomposed manure.

Propagation from seeds: during autumn, using a mix of equal parts of compost and sharp river sand. Cover the sowing mix with a fine layer of sharp river sand, distribute the seeds and barely cover with another layer of sand. Transplant into individual bags/pots once the plantlets have reached some 5 cm (2"), handling very carefully the extremely brittle rhizome & fleshy roots. Sowing in individual pots is advisable.

An alternative sowing method provided by a nurseryman: soak seeds inside the refrigerator for 7 hours. Take them out very carefully (they become soft as butter) and let them dry on paper towel for 3 hours. Repeat the first step, after which seeds are ready to be sowed