orchids and rain

[oscar freak]

its officially spring here in South Africa and the temps are warming up nicely and any day now the rains should start.all my cymbidiums are flowering so i'd rather keep them out of the rain but would my non flowering dends and phals appreciate being out in the rain when it does come,i usually rush out all the other house plants during the rain as a treat.

[silken]

I think so long as water doesn't sit in the crowns and they have good drainage they would love some rain.

[MattWoelfsen]

As silken provided good caution, I would add another caution: when it rains and your orchids get a good soaking, do be sure to bring them to a sheltered location where the leaves can dry and any moisture in the plants' crown are eliminated. Keep them in a warm space overnight. I made a mistake and left several Phalenopsis outside after a good rain and their leaves got a bad case of cold water related pock marks. Here is an example of what I mean:

[lotis146]

Matt, I didn't know about that threat, sorry to see that.

I've had some of my Phals outside all summer and they've gotten quite a bit of rain, even at times when I wasn't around to prevent water from getting in the crown. I'm still nervous about it, just rained tonight, but I've turned some of them on their sides when it rains so it doesn't just sit there. They've survived more than I thought their fair share of rain in the crowns - not that I suggest you take your chances - but I definitely recommend giving them the chance to love the rain!!

I've got Oncids, Zygos, Phals, Paphs, & Catts outside all summer. Zygolum in bud, Oncid in bloom, Miltonia in bloom, mini Catt just peaking out a bud, 4 Paphs in spike/bud/bloom, & 2 Phals in spike; lots of new growth in everyone. SO yeah, keep us posted on how it goes for you. We're heading into fall now in the Midwest US.

[bil]

Originally Posted by lotis146

Matt, I didn't know about that threat, sorry to see that.

I've had some of my Phals outside all summer and they've gotten quite a bit of rain, even at times when I wasn't around to prevent water from getting in the crown. I'm still nervous about it, just rained tonight, but I've turned some of them on their sides when it rains so it doesn't just sit there. They've survived more than I thought their fair share of rain in the crowns - not that I suggest you take your chances - but I definitely recommend giving them the chance to love the rain!!

Cold water is bad, but I have religiously filled the crowns of my phals year round.
In the wild the crowns get wet, so I don't see the problem.

[silken]

Originally Posted by bil

Cold water is bad, but I have religiously filled the crowns of my phals year round.
In the wild the crowns get wet, so I don't see the problem.

In the wild the plants are often hanging sideways from a tree, so the crowns would drain out most water. They aren't propped upright like we tend to try and make them do in a pot. And they likely get better moving air from breezes than in our homes. That would be the difference.

[Daethen]

My nodosa has 11 spikes outside this summer. Best before was 2.

[Ray]

Pure water is great for orchids, but as Matt so unfortunately-well demonstrated, a cold rain is to be avoided - especially on sun-warmed leaves - or your plants may suffer from mesophyll collapse.

[MattWoelfsen]

Originally Posted by Ray

Pure water is great for orchids, but as Matt so unfortunately-well demonstrated, a cold rain is to be avoided - especially on sun-warmed leaves - or your plants may suffer from mesophyll collapse.

Thank you Ray for putting a name on it: "mesophyll collapse". Exactly!

[oscar freak]

Johannesburg, GautengWeather Detailed ForecastToday
08 Sep Hi : 27°
Lo : 13°
Clear Wind 6 km/hr SSEHumidity 7%Precip chance : 5%Tomorrow
09 Sep Hi : 25°
Lo : 14°
Clear Wind 17 km/hr NHumidity 15%Precip chance : 5%Wednesday
10 Sep Hi : 27°
Lo : 15°
Clear Wind 13 km/hr NNWHumidity 14%Precip chance : 5%Thursday
11 Sep Hi : 26°
Lo : 14°
Clear Wind 20 km/hr NHumidity 14%Precip chance : 5%Friday
12 Sep Hi : 26°
Lo : 18°
Partly Cloudy Wind 19 km/hr NNWHumidity 18%Precip chance : 5%Saturday
13 Sep Hi : 29°
Lo : 12°
Partly Cloudy Wind 13 km/hr WHumidity 11%Precip chance : 10%Sunday
14 Sep Hi : 29°
Lo : 14°
Partly Cloudy Wind 8 km/hr NHumidity 16%Precip chance : 5%Monday
15 Sep Hi : 29°
Lo : 13°
Partly Cloudy Wind 15 km/hr NHumidity 15%Precip chance : 10%Tuesday
16 Sep Hi : 30°
Lo : 14°
Clear Wind 11 km/hr NHumidity 16%Precip chance : 10%

this is my ten day forecast,its looking good and feeling much better,plants are outside on the verandah getting morning sun till about noon out of rains way should we get.the rain is not really cold here except the odd shower in winter,we a summer rainfall area here so im hoping they'l be ok.my dend has been inside all winter long,is it warm enough to put him outside yet?and i know about checking the pot for weight as when to water but with these rising temps does a once a week still work?