I'm a doofus. I missed the fact that the analysis was conducted on your 2/3 soil to 1/3 mushroom compost blend. Anyway, my comment about 0.0 ppm available nitrogen stands. I think it's a lab error. My comments about salinity also stand because we don't know the starting salinity of the compost or the soil. That being said, the final blend is 23% O.M. by dry weight, which is super high. If the mushroom compost was 1/3 of the final blend by volume, that would put you in the 7 to 8% organic range by dry weight if mixed with a mineral soil. And that's if the compost itself were high in organic material. (The analyses I looked at for the compost ranged from about 30 to 60% O.M. by dry weight). So, it would be a safe bet that your 4-way soil is probably around 15% O.M. by dry weight or a little higher. That means that it was probably about 50% to 60% organic material by volume and who the heck knows what that O.M. was. If it was raw wood chips, you would still have some available nitrogen in the analysis, but potentially not enough to balance carbon and it's feasible that you do indeed have a nitrogen draw issue. Or, if it has a heavy manure component, that could contribute to salts. (even a high quality greenwaste compost will often have a salinity level of 5 to 7 dS/m). Also consider that such a high amount of organic matter has the potential to hold too much water, especially if drainage isn't all that great at the bottom of the planters.

Steve, I do this with Gulf Frits when I am curious about a new Passiflora. For example, I have this entire 'wall' of Passis. Last year, something weird happened while we were on vacation (we think the strange kid next door did something while HIS parents were on vacation during the holidays-big party and all that) and anyway, my passis just died. I mean, kaput. So, hubby said, "Let's order some new ones-some unusual ones, and see if the GFs will go for them." Before even planting them in the ground, I would offer a leaf to a caterpillar and watch and wait. IF the larva could handle it and pupate successfully, the plant went in the ground. I kept the small containers out for the butterfles to 'peruse' as well. Now, my wall is lush again. But, it was a good way to determine what did and didn't work. The same went with citrus plants. Although we have two orange trees in our backyard and a lemon, never have I ever found a GST egg on the lemon. Nope, nary a single one! At the nursery I would find eggs on the Mexican lime so I went and bought a Mexican lime plant. :)

There you are! I spotted your original post a few minutes ago. It was in a strange forum called "Other" but it's since disappeared.

On the main page it will say start a conversation. ..click it. Than type in your subject which must be 15 or more letters...than type in the body of your message than click next...here you must choose at least one place for your thread to goto. I scrolled down and found kitchen table and clicked it..than I clicked post. ..do not assume that just brcause your at the KT when you start your thread that it will show up here...it won't unless you choose the KT.