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lisas285

Money tree with mottled leaves?

4 years ago
last modified: 4 years ago





My beautiful money tree suddenly started to act out about a week ago. The leaves are starting to become mottled and fall off. I’ve moved it closer to its south facing window hoping that was the culprit, but surely its too soon to tell. its potted in a mix of general purpose potting soil, perlite, spagnum, and cactus soil. i water it about every 9-10 days and use a water meter. Any suggestions for me to save it would be much appreciated. Thank you!

Comments (4)

  • 4 years ago

    Is the pot unglazed clay? If so, that may be too long of an interval between waterings. Never let the soil get completely dry for this plant.

    Lisa S thanked Tiffany, purpleinopp Z8b Opp, AL
  • 4 years ago

    It is, thank you! i feel the soil each week and go be weight as well. the top inch or two usually feels dry at about 7 days but the pot still feels pretty heavy so I might give it another day or two before i water it.

  • 4 years ago

    You may well be over-watering. If you have a 10" deep pot, when the top 2" of the grow medium feels dry to the touch, the bottom 6" of the soil column could easily be 100% saturated. The commonly offered advice to water when the top inch or two of the soil feels dry is fine if the pot is 5" deep or less, but serves as little more than a recipe for over-watering in deeper pots. What's important is what moisture levels are at the bottom of the pot. To monitor for moisture deep in the pot, I suggest you use a homemade "tell" made from a wood dowel rod (any hardware or big box store like Lowes, Home Depot, Menards. If you water your plant when the dowel comes out only slightly moist, you'll avoid stress associated with both over and under-watering.

    Water meters, the inexpensive ones, don't measure moisture levels. They measure electrical conductivity, and as such they are notoriously unreliable. Using a "tell" would serve you much better.

    Using a 'tell'

    Over-watering saps vitality and is one of the most common plant assassins, so learning to avoid it is worth the small effort. Plants make and store their own energy source – photosynthate - (sugar/glucose). Functioning roots need energy to drive their metabolic processes, and in order to get it, they use oxygen to burn (oxidize) their food. From this, we can see that terrestrial plants need plenty of air (oxygen) in the soil to drive root function. Many off-the-shelf soils hold too much water and not enough air to support the kind of root health most growers would like to see; and, a healthy root system is a prerequisite to a healthy plant.

    Watering in small sips leads to avoid over-watering leads to a residual build-up of dissolved solids (salts) in the soil from tapwater and fertilizer solutions, which limits a plant's ability to absorb water – so watering in sips simply moves us to the other horn of a dilemma. It creates another problem that requires resolution. Better, would be to simply adopt a soil that drains well enough to allow watering to beyond the saturation point, so we're flushing the soil of accumulating dissolved solids whenever we water; this, w/o the plant being forced to pay a tax in the form of reduced vitality, due to prolong periods of soil saturation. Sometimes, though, that's not a course we can immediately steer, which makes controlling how often we water a very important factor.

    In many cases, we can judge whether or not a planting needs watering by hefting the pot. This is especially true if the pot is made from light material, like plastic, but doesn't work (as) well when the pot is made from heavier material, like clay, or when the size/weight of the pot precludes grabbing it with one hand to judge its weight and gauge the need for water.

    Fingers stuck an inch or two into the soil work ok for shallow pots, but not for deep pots. Deep pots might have 3 or more inches of soil that feels totally dry, while the lower several inches of the soil is 100% saturated. Obviously, the lack of oxygen in the root zone situation can wreak havoc with root health and cause the loss of a very notable measure of your plant's potential. Inexpensive watering meters don't even measure moisture levels, they measure electrical conductivity. Clean the tip and insert it into a cup of distilled water and witness the fact it reads 'DRY'.

    One of the most reliable methods of checking a planting's need for water is using a 'tell'. You can use a bamboo skewer in a pinch, but a wooden dowel rod of about 5/16” (75-85mm) would work better. They usually come 48” (120cm) long and can usually be cut in half and serve as a pair. Sharpen all 4 ends in a pencil sharpener and slightly blunt the tip so it's about the diameter of the head on a straight pin. Push the wooden tell deep into the soil. Don't worry, it won't harm the root system. If the plant is quite root-bound, you might need to try several places until you find one where you can push it all the way to the pot's bottom. Leave it a few seconds, then withdraw it and inspect the tip for moisture. For most plantings, withhold water until the tell comes out dry or nearly so. If you see signs of wilting, adjust the interval between waterings so drought stress isn't a recurring issue.

    Al

    Lisa S thanked tapla (mid-Michigan, USDA z5b-6a)
  • 4 years ago

    That was incredibly informative and I appreciate the time you put into answering me. thank you!

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