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Problems, solutions, and tips

PostPosted: Sat Mar 27, 2010 11:05 pm
by Ulmdorgr
A list of problems, their causes, and solutions. This is an incomplete list. Last updated: November 1, 2010.

How to identify pests: ... mon-pests/

Problems and solutions

  • Browning/black edges of leaves: necrosis. Two causes are listed below, however, they are somewhat contradictory. If you can shed more light on this topic, please do.
    • According to, "When black edges appear on the leaves this is often due to a (too) low humidity."
    • Over watering; typically watering too often. Attempt to water on a conservative basis (once a week). Before watering, place a finger or specialized tool into the soil to sense the amount of moisture. Can also be caused by excess misting.
    • If the roots are clumped together, holding soil tight, the plant will not be able to absorb moisture. Having a rootbound plant will stunt its growth and probably kill it if you do not act quickly.
  • Chlorosis: yellowing of stem and leaves. Caused by:
    • Over watering; typically watering too often. Attempt to water on a conservative basis (once a week). Before watering, place a finger or specialized tool into the soil to sense the amount of moisture. Can also be caused by excess misting. See this page for more info.
    • Iron, or sometimes zinc, deficiency. This affects the plant's ability to absorb nutrients.
    • Unfavorable soil ph levels.
      • Erowid suggests that Salvia Divinorum prefers slightly acidic soil PH (6.1-6.6): "Regardless of what soil mixture you use, try to keep your soil pH between 6.1 and 6.6. Were able to achieve this by watering approximately once a month with Stern's Miracid® or with a solution of 1 tablespoon of 50- grain (5 percent) natural apple cider vinegar to one gallon of water."
    • Poor drainage of water. Make sure your pots have holes in them! If holes are near the bottom, do not let excess water, such as in a tray to catch water, rise high enough to touch the soil.
    • Damaged or compacted roots. Re-pot your plants yearly.
    • Using certain pesticides or herbicides.
    • "Exposure to sulfur dioxide."
  • Fungal infestation: results in "red, brown, yellow, or black spots on leaves and stems... On some Prunus plants, the spots drop out, leaving a "shot hole" appearance. Sometimes spots enlarge and coalesce, and then infected leaves drop; severe infections can defoliate some plants" (Sunset , 554). Some fungi cause black spots and some cause rust on the bottom of leaves. Caused by:
    • Humidity: higher humidity promotes the growth of fungi and bacteria, as well as tropical plants. Since La Pastora loves her water, fighting with fungicides or living with the fungi may be your only options. You may want to try to grow her at a lower humidity.
    • Anthracnoses: a specific disease.
    • black spot: a specific disease; "familiar to rose growers" (Sunset, 554).
    • scab: a specific disease. Some affect fruits like apples and crabapples. Others affect "loquats, pyracanthas, and toyons; still another infects willows. Scab is most prevalent in high-rainfall regions. The scab fungus (as well as the fungus that causes black spot on roses) differs from other leaf-infesting fungi in that the dark spots on leaves represent fungus growth on the foliage rather than dead tissue. For control of scab on deciduous trees, spray just before flower buds open with benomyl or wettable sulfur... Thoroughly spray with benomyl as needed; clean up all infected foliage debris" (Sunset, 554).
  • Fungus Gnats (white flies; maggots/worms)
    How to identify:
    Ways to exterminate:
    • Remove the top 1/3 inch of soil and replace it with 1/3 inch layer of diatomaceous earth (or sand) on top of your soil. These rocks will cut up these critters.
    • "Neem oil. I use 1.5 % neem tree oil per volume in a light water sloution(currently using Garden GuysGarden Neem, spray/soak the top soil and bottom of pot with this solution and you should be fine. It worked after 2 applications for me." - HappyTrip90
  • Slugs: "Pests can attack salvia plants just like any other plant. If you're having a slug problem, beer is always a good solution. You can place a saucer around your plant that is flush with the soil, so slugs can get in, have a party, get drunk, get in a fight, and drown! HaHa! It's funny but it works."</ref>
  • Spider mites: "can be controlled by soap and water, but this needs extreme care and caution so you don't end up killing your saliva plant. Remember, a garden hose is always the best way in killing pests. Spraying the leaves with a fine spray, hard enough to spray the critters away without damaging the leaves. Also remember to get under the leaves as well too."</ref>

  • "If your in a pot already do not remove it to look at the roots. Removing dirt from the roots will only make the problem worse." - Hero4Evz

Works cited
  • Sunset Western Garden Book. Sunset Books, Inc. Fifth ed. 1997. Menlo Park, California.

Re: Problems and solutions

PostPosted: Sat Mar 27, 2010 11:48 pm
by nothim
i remember something , reading this !!!

thank you!

change the soil mix once a year , very important , do not use the same soil if it has been used already, and do not try to add new soil parts(mixes) to the old(used) soil either, it will not work,

i know it sounds weird, but it happens, cause if you live at the 3 rd floor or more, you prefer that used soil just for comodity

if you set up a compost bin, do not use orange or citrius peels , i know for my own experiences----instead use lots of bannana peels added to the compost and earthworms---- ... ost-System