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Ask questions about how to grow and care for Venus Flytraps

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By Jonesiest1
Posts:  5
Joined:  Wed Feb 17, 2010 3:46 am
#49473
What is going on with my plant?! The edges of the leaves are turning black on an otherwise healthy VFT!
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By Veronis
Posts:  2200
Joined:  Fri May 29, 2009 8:41 pm
#49477
My healthy flytraps get that all the time. It's definitely nothing to worry about. :)

It usually happens if the flytrap is getting more light than it needs, and/or it's hotter than the flytrap would prefer. It's hard to give a flytrap too much or too intense sun unless you're above zone 8. An east-facing window will usually solve that problem (morning sun is better and won't burn the plant as readily as late afternoon/evening sun will).

Another common reason for this is if a flytrap is coming out of dormancy and makes a few leaves/traps, then the Spring weather suddenly gets much hotter for several days, the flytrap can't adapt fast enough and you get some burning. But this doesn't harm the plant either.

In fact, chances are if you do nothing, the burning you have in that photo is about as bad as it's going to get.
By PaikuhanX
Posts:  16
Joined:  Sun Mar 21, 2010 3:48 am
#49499
That's good info to know. Some of my leaves had the same kind of spots, which I figured was fungus, so I went out and purchased some fungicide to spray on them.
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By Steve_D
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Posts:  3913
Joined:  Tue Nov 18, 2008 5:06 pm
#49501
The leaves that are turning black on the edges look like the oldest leaves, which is common as they reach the end of their life. However, yellowing and browning of leaf margins could also indicate salt burn (too many dissolved minerals in the water or growing medium).

If you water only with pure distilled water (or rain water or reverse osmosis water) and your growing medium is a typical carnivorous plant medium with no additives (such as Miracle-Gro puts in their sphagnum peat and perlite), and you flush the medium by top watering occasionally and disposing of the drained water, then all should be fine. :)
By PaikuhanX
Posts:  16
Joined:  Sun Mar 21, 2010 3:48 am
#49503
What if you have a brand new tiny trap come up and then the edge of the trap turns black before it even opens for the first time? Is it likely that it was just sunburn?
By moof
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Posts:  1036
Joined:  Sun Oct 18, 2009 7:54 am
#49508
It happens sometimes after dormancy on a couple of traps, or it can be the effect of overwatering if such traps keep developing
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By Steve_D
Location: 
Posts:  3913
Joined:  Tue Nov 18, 2008 5:06 pm
#49521
PaikuhanX wrote:What if you have a brand new tiny trap come up and then the edge of the trap turns black before it even opens for the first time? Is it likely that it was just sunburn?
Yes, that often happens when a Flytrap used to more humid conditions experiences hotter, dryer conditions, and it's nothing to worry about to much. Venus Flytraps will adjust to lower humidity and more sunlight, but occasionally a newly emerging trap tip will dry and darken.

It helps in the long run not to overwater the plants. When watered too much, Venus Flytraps can grow faster, but the leaves are thinner and weaker, more fragile and susceptible to such things as you mentioned. So it's a good idea to water thoroughly but conservatively, allowing the medium to dry substantially before watering again, unless the Flytrap wilts terribly, in which case the process of going from overwatering to conservative watering will have to occur more slowly, but is still a good idea, in my opinion. :)
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