Red Anjou or Red d'Anjou pear trees are common in Oregon which experiences cold snaps to full fledge snow. Red Anjou actually came from the common green Anjou in the 1950's as a freak of nature that turned out to be better than the mother plant. Some people say that they're a bit sweeter. I think they taste the same as the green myself. It's their shape that's unique and fanciful for photographers and artists.
Pear trees can reach a height of 25 feet or more and grow in any fertile, well-drained soil, in full sun. They have strong vertical branches and require little pruning. The fruit grows on long-lived spurs and is spherical to typically pear-shaped. It should never be allowed to ripen on the tree. The ripening process is completed in storage where the pears will ripen more evenly. Fire blight is the most serious of pear diseases. Caterpillars, leaf roller, blister mites, aphids, scale insects, dieback, powdery mildew and scab can also be a problem. Hardiness zones 5 - 9. Plant in full sun,
I wouldn't recommend as a potted plant. It would most likely stunt its grown and not product pears correctly. It's not considered a dwarf plant. Cheers ~LosAngeles
PS. I would freeze the seed for a week or so before planting. This will germinate the seed faster. It confuses the seed into thinking it's coming out of a winter. Are the seed purchased from store bought pears or do you have a tree? If so, it's better to just take a cutting from the tree and dip in rooting hormone. You'll skip about a year of waiting for the seed to grow. You should expect fruit the 2nd or 3rd year of growth.