Product information "Sowing & growth medium GD-D"

Directions for use

Weigh out the required amount of powdered dry product. If there are any lumps, crush them with a mortar or with your fingers. Slowly sprinkle the prescribed amount of substrate into 1 l (for 0.5 l, use half the dose, etc.) of distilled or demineralized boiling water and dissolve it. Continue stirring and heating until everything has dissolved: the solution will then be clear to translucent. The pH value does not need to be adjusted; depending on the substrate, it is between 5.0 and 5.5.

Additional natural substance additives or active ingredient additives are generally not necessary but can be added. When using a birch sap additive in the growth medium, no pH adjustment is also required. However, some natural substance additives, such as unsweetened pineapple juice, make a pH adjustment necessary.

If insoluble or poorly soluble components (sediment) occur in the growth medium—for example, also with banana puree additive—the undissolved portion must be distributed evenly among all culture jars.

In practice, the following media have proven particularly suitable for transplanting the germinated seeds, whereby the protocorms should be approx. 1 mm in size:

With pineapple additive, the pH value must be adjusted drop by drop to pH 5.1 using salmiak spirit*. It has been shown that freshly prepared natural substance growth medium combinations are preferable to similar prepared canned products. Birch sap, pineapple juice, and pineapple-banana homogenate have a very good shelf life when stored in the freezer (1–2 years).