Gardeners vary in their methods of coping with dry spells that could increase due to lack of rainfall. After cultivating the soil, many gardeners simply now and then remove any weeds. Gradually the soil becomes compacted. It might look nice and clean and tidy and flat. This is of little help to the plant. Please. I am not teaching Granny how to suck eggs, or preach to the converted. We get many newcomers to gardening using the forum, so it's these folk I am trying to help. An purposeful act in the garden is to keep the soil open and light. Using a Dutch Hoe with te blade turned down, a gentle chiseling motion will finely btrak the soil surface. This help to areate. Now if water is short. Give the plant a good soaking and then grass mowing can be used as a mulch. Not alot of moisture will come about but every little helps. Also having gone through the aforementioned, larger areas can be similaryly treated but perhaps using black polythene. To prove the point. Lay a black bin liner down overnight and next morning lift and see the affect. Another emergency helper is. Recycling household waste water. I know that here inthe UK, this has been suggested by the authorities. OK it's water, but when it's water from the washing machine etc, there might be harmful chemicals. Please check out this link. http://vric.ucdavis.edu/pdf/fertilization_Householdwastewater.pdf I hope this helps.