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This list from the National Garden Bureau rates vegetables based on their total yield per square foot, average value per pound, and length of time in the garden. Crops are rated from 1 to 10 with 10 being the most efficient.
| Tomatoes, grown on supports | 9 |
| Onions, green bunching | 8.2 |
| Leaf lettuce | 7.4 |
| Turnips for greens and roots | 7.4 |
| Summer squash | 7.2 |
| Onions, bulbs for storage | 6.9 |
| Peas, edible podded | 6.9 |
| Beans, pole | 6.8 |
| Beets, for greens and roots | 6.6 |
| Beans, bush | 6.5 |
| Carrots | 6.5 |
| Cucumbers, grown on supports | 6.5 |
| Peppers, sweet | 6.4 |
| Broccoli | 6.3 |
| Swiss chard | 6.3 |
| Kohlrabi | 6.3 |
| Mustard greens | 6.2 |
| Spinach | 6.2 |
| Beans, lima (pole type) | 6.1 |
| Radishes | 6.1 |
| Cabbage | 6.0 |
| Leeks | 5.9 |
| Collards | 5.8 |
| Okra | 5.7 |
| Kale | 5.6 |
| Cauliflower | 5.3 |
| Eggplant | 5.3 |
| Peas, English | 5.2 |
| Brussels sprouts | 4.3 |
| Celery | 4.3 |
| Melons | 3.8 |
| Winter squash | 3.8 |
| Pumpkins | 1.9 |
According to Nona Koivula, Executive Director of NGB, vegetables have become generally more productive since this rating was established due to breeding improvements of the last few decades, especially in peppers, tomatoes, eggplant, and winter squash. However, it is a good guide for comparing one crop to another.