Home-garden production was recorded for the only time in the population census of 1956, 344,104 households (62·4 per cent) having home gardens. Of those with gardens, 28·7 per cent grew some potatoes and 29·7 per cent some vegetables. All probably had flower gardens. Home gardens are usually between one-eighth to one-quarter acre, the average probably being one-sixth. Nearly all gardens are planned, developed, and tended by the owner himself; there are very few landscape architects or jobbing gardeners. New Zealand's climate encourages the growing of a range of plants wider than that of any other country of like size; indeed, probably as great a range is grown here as in the whole of the United States. For instance, one nurseryman grows more than 3,000 varieties of woody plants.