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Container Gardening: Is anyone else having problems in high heat?

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revclaus
(Judith) Denver, CO
(Zone 5b)

June 24, 2012
11:10 AM

Post #9178614

Yesterday it was 104F in Denver, much hotter than our 85F average. My container plants are suffering. I'm losing some, others look like they have leaf burn, some have mildew, others just plain died. Some of the dahlias are suffering more than others, and the osteospernum look pretty bad too.

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ecrane3
Dublin, CA
(Zone 9a)

June 24, 2012
11:18 AM

Post #9178626

When we get sudden extremely hot weather, I usually try to move my containers into an area where they get a little more shade in the afternoon. Is that an option for you? When temperatures suddenly get really hot like that (vs gradually getting warmer and warmer) I've found that plants can sunburn. Watering is important too of course, I'd make sure you're watering thoroughly when you do water (vs just giving them sips) to make sure that the potting mix really gets wet all the way through. And of course you'll also need to water more often.
revclaus
(Judith) Denver, CO
(Zone 5b)

June 25, 2012
6:50 AM

Post #9179742

I can't move them. Of course, that would have been an option. And when I water I water thoroughly. Guess I'll just have to wait it out and hope for the best.
ecrane3
Dublin, CA
(Zone 9a)

June 25, 2012
6:54 AM

Post #9179750

If you can't move them, can you rig up a patio umbrella or shade cloth or something along those lines to protect them from the sun during the hottest part of the day? I've found once plants get used to hot weather things tend to go better, it's just that first really hot spell after cooler weather that seems to cause the biggest problem.
Anna_Z
Monroe, WI
(Zone 4b)

June 25, 2012
9:19 PM

Post #9181224

All my potted plants look pretty crappy. I guess I shouldn't complain, as the farmers' hay, corn, and soybean fields are starting to suffer. We need rain...BAD!

meadowyck

meadowyck
Brooksville, FL
(Zone 9a)

June 26, 2012
1:15 PM

Post #9182218

you might want to try something like this http://shadeforplants.com or maybe go to a local dollar store and purchase some childrens umbrellas for a quick short term solution. A lady down the street where we use to live used small umbrella's on her handing plants that she had on the side of the fence. At first I had to look twice when driving by, then I realized what was on there.

Hope you don't loose too many.

Jan

jaimelemon

jaimelemon
St. Louis, MO
(Zone 6a)

June 26, 2012
1:38 PM

Post #9182266

Just curious, what do sunburned leaves look like? My lemon tree's leaves have been looking a little more yellow than normal and I haven't done anything differently. It wasright at 100F on Sunday, Thursday it is supposed to be 104F.
ecrane3
Dublin, CA
(Zone 9a)

June 26, 2012
5:40 PM

Post #9182578

Yellow sounds like it's more likely a fertilizer or watering issue not sunburn. Sunburn starts off as bleached out areas on leaves which eventually turn brown as the burned parts of the leaves die.

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