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*sigh* Well looks like P. morensis is a goner

Posted by paul_ z4/5 MI (My Page) on
Sun, Mar 30, 08 at 21:59

Well I was happy to see what appeared to be several growth points on my ping. For a while it did really well. Got it as a small plant and it grew quite quickly. Even bloomed for me. But over the last month the plant has steadily been getting smaller and smaller -- leaves shriveling up.

It is in a terr on a small mound of sphag. It has been kept moist. Trmps stay pretty consistently in the 70's to low 80's. I did check and it does have some little white roots underneath the rosette. I haven't noticed any critters feeding on it or any holes on the leaves. Dros capensis and adlae in the same tank are doing just fine. Even have some moss that is growing & trying to reproduce. No idea what the problem is.


Follow-Up Postings:

RE: *sigh* Well looks like P. morensis is a goner

The leaves are just getting smaller? It sounds like it is forming a "winter rosette," although in cultivation these plants can form smaller rosettes at any time of the year in response to changes in light and temperature. As long as the plant is not turning brown and rotting, it should be fine. Most people recommend keeping the plant on the dry side during this phase. The small leaves produced during this period may or may not have carnivorous glands.

By the way, there is no reason for this plant to be in a terrarium other than aesthetics. It can handle normal household humidity and temperatures just fine, as can your two Drosera species. I grow my Pinguicula on a west-facing windowsill all year and they have no problems growing, flowering or dividing. Terrarium culture makes these plants much more prone to rot and fungal infections.

RE: *sigh* Well looks like P. morensis is a goner

  • Posted by paul_ z4/5 MI (My Page) on
    Mon, Mar 31, 08 at 18:02

Is there anyway to be sure if this is just winter rosette formation? Also, just how "dry" is "on the dry side"?

A lack of room is an issue. A terr actually provides me w/ more growing space and a more stable environment. (My humidity in winter is around 15-20% -- cp's I've had in the past have not handled it well.)

Aethetics is another reason too. :)

RE: *sigh* Well looks like P. morensis is a goner

Hi Paul:

Is the center of the plant turning brown or just the edge of the outer leaves? If the center is turning brown, or if the growth has stopped completely (rather than just slowed down), then it is likely that your plant is unhealthy. Can you take a picture of it?

For me, the dim light and high humidity found in the typical terrarium = rotted pings. If the air in your house really is only 15-20% humidity, then it is unhealthy not only for your plants but for you as well. I try to maintain my indoor humidity at around 40-50% all winter and it leads to fewer respiratory problems for me and overall happier plants (not just CPs).

RE: *sigh* Well looks like P. morensis is a goner

To give you an idea of the difference between summer growth look and winter rosette, here's my P. gypsicola is the summer:

P. gypsicola

And here's the winter rosette:

P. gypsicola

The plant should be waking up, now, though.

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