Squashes
Cucurbita pepo from the Cucurbitaceae family. Related to the pumpkin, zucchini, gourd, rockmelons, et al. Native to North America.
Cucurbita pepo includes quite a few well-known vegetables in addition to the plant I'm waxing lyrical about here. Zucchinis and most types of pumpkin are of the same species.
Some folk call these squashes, summer squashes or petit pan squashes. The seed packet I bought simply called them patty pan squashes. Here in Australia, there doesn't seem to be much difference between the marrows and squashes in the eyes of many.
I planted these in the same plot as I did my radishes and rockmelons and all three plants have thrived. I haven't gotten any rockmelons to mature yet, but they're a slower growing crop from all accounts.
I don't have a scanner at the moment at which to scan in photos of my own plants, so I've leached the photos found at Wikipedia's entry for the vegetable. These pictures are copyrighted under the terms of the GNU general public license and are not my own.
Being mindful of cucurbits not being self-fertile, I was at pains to pollinate the girl flowers when they appeared. My yard and garden does get a few bees, but not enough to ensure that the plants will fruit properly. It's a strategy that's worked for all of the cucurbits I'm growing.
The squashes should be harvested when they are 10-12 centimetres (4-5 inches) in diameter. If left longer, they get watery and bland. There are many ways to cook them, but the most scrumptious way I've had them is sliced, lightly boiled with some mild garlic butter and MasterFood's brand roast vegetable sprinkled added for effect. Wonderful!