Help please...

From: plantnut plantnut at macconnect.com> on 2001.05.05 at 05:14:57(6371) I received the following from Mr. Jackson.... Can anyone offer any suggestions? Please reply to Mr. Jackson direct with a copy to aroid-l. Dewey +More >From: "Daniel Jackson" >To: plantnut@macconnect.com >Subject: Help please... >The edges of the leaves on my Amorphophallus are turning yellow then brown >and crumbly. The pot is on the balconey and gets light from 11 am till >late in the afternoon. I keep the soil damp but not wet or muddy...The >temperature gets into the upper 70's low 80's but goes down to the 50's at >night. Can you advise? Dan

From: Scott Hyndman hyndman at aroid.org> on 2001.05.05 at 19:48:35(6373) Dewey, Although the details are a bit sketchy, Dan's problem sounds very similar to the same problem I experienced last summer as I was growing my large Amorphophallus paeoniifolius in the 150 gallons (600 liters) pot that I use. I nearly loved the plant to death. Although I am a trained and experienced horticulturist, I couldn't resist over fertilizing the plant, especially during the growth phase when I knew the new tuber was growing. The high salts damage appeared exactly as Dan described, "The edges of the leaves on my Amorphophallus are turning yellow then brown and crumbly." If this is the case, the damage to the foliage is already done and is irreparable for this season, unless the tuber is young and another leaf could form depending upon the species in question. The root damage could regenerate it's self as it did with my plant which yielded a 70 pound (33 kilogram) tuber that was healthy and is about to bloom now. However, the foliage appeared as though the plant was about to die at any time. If high soluble salts in the soil is the culprit, Dan needs to flush the soil with plenty of salt-free (fertilizer-free) water, and then fertilize with only a weak solution in a couple of weeks, followed by weak fertilizing perhaps every other week. There is some very good growing recommendations for Amorphophallus at http://www.aroid.org/genera/amorphophallus/amcult.html and at http://www.aroid.org/genera/amorphophallus/bonnculture/ . Happy growing, Scott +More --------------------- Mr. Scott Hyndman International Aroid Society Web Site Vero Beach, Florida, USA USDA Hardiness Zone 10a E-mail: hyndman@aroid.org on 5/5/01 1:14 AM, plantnut at plantnut@macconnect.com wrote: > I received the following from Mr. Jackson.... Can anyone offer any > suggestions? Please reply to Mr. Jackson direct with a copy to aroid-l. > Dewey > > >> From: "Daniel Jackson" >> To: plantnut@macconnect.com >> Subject: Help please... > >> The edges of the leaves on my Amorphophallus are turning yellow then brown >> and crumbly. The pot is on the balconey and gets light from 11 am till >> late in the afternoon. I keep the soil damp but not wet or muddy...The >> temperature gets into the upper 70's low 80's but goes down to the 50's at >> night. Can you advise? Dan > >

From: mburack at mindspring.com on 2001.05.07 at 14:25:50(6381) Didnt I ask this same question about a dozen times with no response? Well maybe someone will respond to "Mr. Jackson's" and I can only hope to benefit from it. (Dewey, Tim, you let me down on this one :-) I do however think I may have solved it. On plants that were doing this, I went to a violently light mix using anywhere from 50+ % of pearlite with peat and composted pine bark. I am convinced it is a function of too much water.. These plants transpire like crazy and every morning they have drops of water on the tips of the leaflets....The water may be burning the tip of the leaf when the sunlight is on it...or maybe it is a function of deposited mineral salts from fertilizer sitting on the tips via transpiration. Anyway after repotting, and growing them like air plants, they seem to be improving. Bottom line.... let that soil DRY out... it seems to be finally working for me. +More aroid-l@mobot.org wrote: > I received the following from Mr. Jackson.... Can anyone offer any suggestions? Please reply to Mr. Jackson direct with a copy to aroid-l. Dewey >From: "Daniel Jackson" >To: plantnut@macconnect.com >Subject: Help please... >The edges of the leaves on my Amorphophallus are turning yellow then brown >and crumbly. The pot is on the balconey and gets light from 11 am till >late in the afternoon. I keep the soil damp but not wet or muddy...The >temperature gets into the upper 70's low 80's but goes down to the 50's at >night. Can you advise? Dan

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