How much water can Italian Cypress tolerate?

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ecrane3 Dublin, CA(Zone 9a) Jul 04, 2007

I have a row of Italian cypress (Cupressus sempervirens) between my house and my neighbor's house to provide privacy. On my side of the property line there's no grass and very little irrigation, but right on the other side of the fence my neighbors have a lawn. The cypress trees did fine for years with a normal level of lawn watering, but I have new neighbors now who for some reason decided they need to water their lawn every single day and have been doing that for 2 weeks now. I'm planning to talk about this with them the next time I see them outside, but I'm curious whether this is going to kill my trees if they insist on continuing this excessive watering? I think the sprinklers run for about 15-20 min each morning. Thanks for any thoughts!

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Resin Northumberland, United Kingdom(Zone 9a) Jul 04, 2007

Should be OK as a one-off like this for a couple of weeks (it has rained here every day for the last month or so, and the Mediterranean Cypresses here haven't suffered), but I don't think they'd like it as a permanent change to the soil moisture regime.

Give your neighbours some literature about the shortage of water resources and water conservation - I'm sure your local city authority and/or water company will produce some good stuff!

Resin

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ecrane3 Dublin, CA(Zone 9a) Jul 04, 2007

Actually I was rather disappointed because my local water company was rather unhelpful--these guys were doing the water every day thing back in the spring too when it was cool and still raining sometimes and the lawn absolutely didn't need that much water, at the time I called to ask them for some guidelines on how often lawns should be watered (since I haven't really had a lawn since I moved to California I wanted to make sure I was giving the guys good advice) and they couldn't tell me anything, I asked if they had any pamphlets or anything that they could send me about appropriate water usage and they didn't have anything. Then a couple days later the guys started watering like normal people and that continued up until 2 wks ago when they started watering every day again. I've already noticed their penstemons and potato vines in their garden starting to show signs of overwatering, so I'm hoping when I point that out to them and tell them that their lawn is next that'll be enough to get them to change. And if that doesn't work, the threat of the big bill I'll be sending them to remove and replace those trees when they kill them will hopefully do the trick! There are 5-6 trees, all about 50-60 feet tall and in an area that's going to be very hard to get any sort of machinery/equipment into. I'm just hoping that legally I can hold them responsible for it, I think I can but I need to check!

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