Pear. Persimmon.

Both are essentially 'no-spray' fruits here, and the percentage of perfect to near-perfect fruits is very high.

A good mulberry is hard to beat.

I grew Asian pears in my Z-7 here in Va but they were eventually wiped out by Fire Blight. American pears are somewhat more tolerant to FB. The easy of the easiest fruits to grow without being bothered by diseases, insect pests, or critter theft are persimmons, the squarish shaped non-astringent types are best.

figs and chinese chestnuts too, for bushes blueberries

Some types of Asian Pears are more fire blight resistant than others

For fruit trees, persimmons and jujubes are easy ( meaning almost no pest or disease issues) for your area. There are Asian and American persimmons. Jujubes are also called Chinese dates.

I think you should taste all of them first. Not everyone like the taste of persimmons or jujubes. You don’t want to wait a few years to find out you don’t like the fruit!!! Asian persimmons and Jujubes can be found at Asian grocery stores/markets.

For persimmon, check nurseries such as England Orchard and nursery, Edible Landscaping and Just Fruit and Exotics.

For jujubes, EL, J&E and Burntridge are good nurseries to buy from.

Some jujubes come in pots so the trees may be small. Recently, they offer bareroot jujubes. Somehow, jujube is one of the most expensive fruit trees to buy out there.

Have you tried American persimmon. Its taste and texure is not the same as Asian. Some like it very much and others can’t stand it.

Your wife probably would enjoy Asian non astringent persimmons.

Where are you located geographically?

I have purchased 88 persimmons last fall during the persimmon season. Will check the store again today. The ones I bought were all fuyu persimmons.

What's easy depends upon where you live in zone 7.

They can, with a few exceptions, if the bloom period overlaps

Same area and I have a jujube that does well. Also I got a HD multi Asian pear a few seasons ago but the squirrels never leave any for me. Additionally you can go with a Russian pomegranate as I have a few but mine are in pots due to space, they are never troubled by pests and are low maintenance.

I only ordered 1 Shinko Asian pear tree this spring, should I order a pair?

I am not sure how self fertile Shinko is, though it is one of the most fire blight resistant Asian pears. I know 20th century is partly self fertile, and makes a good pollination partner for Shinko as it tends to bloom only slightly earlier. Asian and many European pears will also cross pollinate if their bloom period overlaps. I would certainly suggest adding a second pear of a different variety to cross pollinate (2 trees of the same variety will not cross pollinate, as they are genetically identical). I know Shinko and Hosui have similar chill requirements, and similar bloom times, so Hosui would also make a good partner. Some of the other Asian pears have much higher chill hour and may not bloom with Shinko.