Answer: 'Washington' navel grows to about 8' high when grafted onto dwarfing rootstock. It's a great tree for your growing region, well-behaved and a reliable producer. Another possibility to consider is 'Robertson' which ripens 2-3 weeks earlier.
The four variety fruit tree advertised is sometimes called a fruit cocktail combination. It combines fruits of the same family, all grafted onto a vigorous rootstock. Generally the fruits include apricots, plums and peaches, all members of the prunus family. It's a fun addition to any landscape and, if you're careful with pruning, should provide the fruits advertised.
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