名媛直播

I am located in the Western Cape Province of South Africa. I started 5 trees from seedling and they are now circa 5 months old. They are potted in normal potting soil and not any special mixture. The soil retains moisture but drains very well. They are housed in a small cold frame, the lid of which is opened every morning. We get very strong winds and this is the reason for the protection of a cold frame, if the winds come up the cold frame is closed. Winds can gust up to 90km/h which destroys seedlings and small plants. The seedlings get diffused full sun from circa 11:00 to 15:00. I have a single piece of 40% shade cloth that covers the plants permanently. The species grow naturally in full sun



I have a couple of questions, this being my first attempt at 名媛直播.

1. The seedlings range from 90mm to 120mm high. At what point should these be re-potted into a more appropriate 名媛直播 substrate?
2. At what point can these be exposed to full sunlight?
3. Some of the seedlings, even though in the same soil have yellowing leaves and leaf loss. We are mid summer here. Are they being kept too wet? I do water very regularly.
3. I am planning a mix of 50% Akadama, 25% Pumice and 25% Pine Bark as the substrate, or should I go totally inorganic and use 25% Lava Rock as recommened in the websites video's.
4. If I go totally inorganic what type of fertiliser is desireable? What minerals do I need predominately?

Many thanks.

I have the answer to question 4. the fertilizer question, from reading the techniques section.

I do not have experience with the particular species. But generally speaking for most species:

1: There are no hurry to transplant seedlings to bonsai soil. Oversized pots and organic soil is a good way to develop trunk thickness and taper fast. I still have trees like this that I got 8 years ago when I started in the hobby. Once they are ready for a shallow pot it is time for bonsai soil.

2: There are no difference in tolerance to sun between young and old trees. They can be exposed at any time just as long as there are a transfer period. Moving straight away will burn leafs and make them suffer.

3.1: The trees in the photo looks healthy to me.

3.2: see point 1. When it is time to put them in small pots you proboably already have mature trees in shallow pots and know your preferences. Ask 10 bonsai artists about the best soil mix and you will get 12 different answers.