Answer: I can think of several possible reasons for the discrepancy between your plants and those of your neighbors. One is that your location is substantially sunnier, warmer or windier than theirs, which would cause the plants to dry out very quickly. This stress would weaken the plants and eventually they would fail to thrive. If you suspect this is the case, you mayn eed to water deeply to keep the soil moist. (Watering deeply less often is better than a light daily sprinkling.) Another reason might be that your soil is different from theirs, either due to unknown factors (such as what happened to the soil when the building was built) or to the way in which it was prepared for planting. You might want to check with them and see if they have been adding amendments to the soil. It is usually a good idea to add lots of organic matter such as compost, well aged stable manure and bedding or rotted leaves to help the soil hold both air and water longer as well as provide nutrients and keep the soil healthy. If you haven't already tried this, you might also consider fertilizing the plants regularly according to the label instructions to help them stay in vigorous growth. There is one last possibility and that is that some sort of physical damage occurred, something like a weed whacker accidently damaged the vines or a passing dog is regularly lifting the leg on it or possibly the wind damaged it. I hope this helps you troubleshoot the problem.
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