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Author Topic: weird cactus thingy  (Read 5673 times)

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Offline Herma

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weird cactus thingy
« on: February 02, 2010, 13:08:39 PM »
I spotted these huge white flowers hanging from a thorn tree in my neighbourhood this morning. When I stopped the car and walked closer I saw it's some kind of climbing cactus growing all over the tree. It was quite a sight.
 
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Offline susan

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Re: weird cactus thingy
« Reply #1 on: February 02, 2010, 13:18:58 PM »
Wow - that is gorgeous.Looks like a "lidroos" Ive got a similar one in red.

Offline Johan & Paula

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Re: weird cactus thingy
« Reply #2 on: February 02, 2010, 21:47:37 PM »
Hi Herma

That is called a Epiphyllum (orchid cactus).I have the white one and another five colors.
See this link
http://www.gardenerforum.co.za/index.php?topic=3668.0
« Last Edit: February 03, 2010, 23:11:13 PM by Johan & Paula »
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Re: weird cactus thingy
« Reply #2 on: February 02, 2010, 21:47:37 PM »
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Offline abby

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Re: weird cactus thingy
« Reply #3 on: February 02, 2010, 23:01:47 PM »
I wonder if it is the one that makes Dragon Fruit  ???
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Offline Herma

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Re: weird cactus thingy
« Reply #4 on: February 03, 2010, 11:06:57 AM »
Thanks Johan!  If this thing makes fruit, they'll be as big as watermelons. These are seriously huge flowers, about the size of a person's head. The plant is a bit creepy but wow the flower display is amazing.
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Offline Michael

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Re: weird cactus thingy
« Reply #5 on: February 03, 2010, 11:15:00 AM »
I've seen some magnificent specimens of these in old gardens in small towns, sometimes covering a whole tree.

Offline Janine

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Re: weird cactus thingy
« Reply #6 on: February 03, 2010, 12:42:47 PM »
Have not ever seen any bearing fruit though...

Beautiful flower, Herma.

Somewhere at home I have pics of my bright almost cerise pink ones, will look for them and post if you'd like and also an orange one "Fiesta del Flores" - the flowers are almost 25cm across!
Janine

Offline Mike Nagle

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Re: weird cactus thingy
« Reply #7 on: March 10, 2010, 19:43:54 PM »
     Hi All,
     That is a picture of Hylocereus undatus, and is indeed the cactus from which Dragon Fruit is harvested.  It is similar to the epiphyllums, but the stem segments are triangular in cross-section, rather than flat.
     I finally got up nerve enough to post! ::)   Mike
Salt Lake City, Utah, USA

Offline Rena

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Re: weird cactus thingy
« Reply #8 on: March 10, 2010, 20:11:10 PM »
     It is similar to the epiphyllums, but the stem segments are triangular in cross-section, rather than flat.
     
Mike - thanks for that - now I know mine isn't a dragon fruit cactus, but an epiphyllum.

          I finally got up nerve enough to post! ::) 
Good for you - hope to see lots more posts now ;D
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Re: weird cactus thingy
« Reply #8 on: March 10, 2010, 20:11:10 PM »
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Offline abby

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Hylocereus undatus
« Reply #9 on: March 10, 2010, 22:23:37 PM »
Thanks for clarifying the matter Mike  :good:
Good to see you posting  :)
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Offline bennie

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Re: weird cactus thingy
« Reply #10 on: March 10, 2010, 22:33:08 PM »
Janine,
 You have to hand polinate them to get them to set fruit. I know that one of these white ones had been banned in Sa and have that  creepy feeling that this is the one.  Anyone know for sure?

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Re: weird cactus thingy
« Reply #10 on: March 10, 2010, 22:33:08 PM »
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Offline Herma

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Re: weird cactus thingy
« Reply #11 on: March 11, 2010, 11:46:44 AM »
You're right, Mike, the stems on this one are triangular. I'll keep an eye out for fruit!
I'd seen the smaller type with red flowers before, but this huge tree climber was an unusual sight.
Also, Rena said hers flowers at night and I took this picture in broad daylight.

No reason to be shy, Mike!
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Offline Janine

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Re: weird cactus thingy
« Reply #12 on: March 30, 2010, 08:08:29 AM »
Janine,
 You have to hand polinate them to get them to set fruit. I know that one of these white ones had been banned in Sa and have that  creepy feeling that this is the one.  Anyone know for sure?

I don't know too much about what's on the banned lists, I check every so often but don't know a wide enough variety of plants to recognise them if I see them.
Janine

Offline Herma

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Re: weird cactus thingy
« Reply #13 on: March 30, 2010, 11:09:38 AM »
The SA gardening magazines had photo pages of invaders towards the end of last year. I can't remember if it was The Gardener or one of the others, or all of them.
I was surprised to see how many familiar plants were on the list (even the "wild" canna with the small flowers!). I wish tecomas and fountain grass (and bougainvilleas) could be banned here, because the ones in my neighbours' yards give me grey hair! I don't have proper wild weeds in my garden, just baby tecomas,  fountain grass and oleanders to pull out every week.
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Offline Rena

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Re: weird cactus thingy
« Reply #14 on: March 30, 2010, 11:17:43 AM »
Herma -

You are careful when you pull out the oleanders, aren't you??

The self-seeding ones are very poisonous - I have heard of gardeners who got very ill after pulling out seedling oleanders....
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