Given a pot of organic garlic and wonders if she can grow it now or should wait to plant it outside next year?
Fall planting is recommended. Since the soil is now frozen the planting will need to wait for Spring. As a rule, spring planted bulbs are not as large.
Plant one clove 5 cm deep and separated by 5 cm. See our October tips at : https://www.torontomastergardeners.ca/index.php/october-planting-garlic/