Packing peanuts tend to make water perch in the soil above the "drainage layer" and are something of a nightmare at repot time, so I'd discourage you from using them. The ballast you need should allow a continuous column of soil that goes all the way to the bottom of the pot. Notice, in the picture above, that the PWT is the same ht in every picture. No matter if the soil was 12" deep or 12' deep, the PWT would be the same ht for a given soil. Also note how the volume of soil is reduced in C and D, reducing the volume of saturated soil considerable. If you build a ballast system in the bottom of the pot so there is only a VERY small amount of soil that CAN support perched water, you can eliminate it almost entirely. If you go too far and eliminate that soil column that extends to the pot bottom, you don't get the benefit because that causes the water to perch. If you pot up now, you don't want to mix the media in the pot because you'll have parts of the soil that are too wet and parts too dry. Your main purpose for the repot is to use a little science to get rid of the excess water retention until next summer when you can bare-root/repot with little concern about the plant's recovery time, which is an issue now. Yes - the soil I use for my trees is very gritty, which is prolly why people started calling it the gritty mix. The dime is about the same size as your dime. In many ways, it doesn't matter much how you implement the concept of using materials of larger particles to eliminate the limitations imposed by saturated soils, and pumice is a useable component. I probably have 50 ficus trees, and none show any evidence of oedema or any other symptoms of too much water in the rhizosphere, and I water most of them daily in the summer - not particularly because they need it, but because I can w/o concern about over-watering. This is a ficus a week after I defoliated it in July of '14. You can see the soil ...... It grew a lot before I took it in for the winter, so I pruned it back before it went indoors. This is the tree in spring, this year and here it is after defoliation and ready to grow some more I'm not sure where to find soil ingredients in Canada. Fir bark should be easy to find, but you must be careful that you don't buy a product that was ponded in salt water. Quartzite or cherrystone is mined in MN, but I don't know if it crosses the border into Canada. Look for the grit component at rural feed stores or grain elevators that cater to rural populations that raise fowl, and don't use crushed shellfish because of the salinity and high pH. Al

Hi Dave, I actually tried the moisture meter with tap water, and it gave me a 10. I read somewhere that the metal probe must be cleaned thoroughly (e.g., using steel wool) if the meter gives drastically incorrect readings. But in any case, I did try the finger test, and the top inch felt dry, but the inch below felt damp -- when I took out my finger, some dirt was stuck on my finger. I checked for pests, but didn't see any. But I will probably give it another look later.

I'd do a through flush of the soil when it's ready for water (use the dowel method to check). Put the tree in the tub and add 10x the water it would take to saturate the pot. Then let it drain while tilted at 45°. Get it closer to a window and it it wouldn't hurt to fertilize at the next watering after the flush. Ficus trees are super easy once you get down the basics. I started with a small 3 foot ficus Benjamina 2 years ago and knew nothing about what I was doing. i leaned a lot from Al and now my tree is 7 feet tall, very full and healthy in an 18" pot with the 5:1:1 and does really well. Ficus Benjamina has just about the same exact cultural needs as your ficus lyrata.

Your plants' issues, relative to the spoiled foliage, are most likely related to over-watering, a high level of dissolved solids (salts) in the soil solution, or an ammonium toxicity that develops when roots are asked to live in saturated soils. I'd suggest that you start using a 'tell' to determine when your plants actually NEED water, and only then supply it. A 5/16" wooden dowel rod, ends sharpened in a pencil sharpener, makes a good 'tell. Read more below, and please forgive the formatting. It's from something I wrote and saved. The leaf shedding can be from a decrease in light during the last 6 weeks or so, from nutritional issues; it can be a drought response to a high level of dissolved solids in the soil solution, under-watering, or over-watering. It also appears there might be some mechanical damage (like a bruise would be to a human or animal) and some oedema symptoms on the calathea. 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 air (oxygen) in the soil to drive root function. Many off-the-shelf soils hold too much water and not enough air to support good root health, which is a prerequisite to a healthy plant. Watering in small sips leads to a build-up of dissolved solids (salts) in the soil, 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. You might find this helpful. Al