To maintain the quality of peat substrates, follow the “First in, First out” principle and store them in a cool, dry place, ideally below 25°C. Avoid direct sunlight, high humidity, and storing bulk substrates inside greenhouses, as these conditions can cause moisture loss or degradation. For added protection, cover stored substrates with black nets or other UV-stable materials to shield them from sunlight and rain.

The accumulation of fine particles at the bottom of pots is known as “silting.” It usually occurs when a substrate with an overly fine structure is used in larger pots, which can reduce oxygen availability around the roots. To help prevent this, choose substrates with a coarser structure or a higher proportion of sod peat, especially for long-term crops, as this helps maintain air capacity and reduces compaction.

A wetting agent in a substrate is typically effective for around 6 to 8 months when stored under proper conditions. Its performance can be reduced by factors such as direct sunlight and temperature fluctuations. Wetting agents are mainly used to improve rewetting during the early stages of cultivation.

An unusual odor in peat substrates, often similar to ammonia or rotten eggs, can develop when compressed material is stored or transported in warm conditions. This is usually caused by anaerobic microbial activity in low-oxygen environments. To resolve the issue, aerate the substrate as soon as it is opened so the trapped gases can escape and oxygen can return to the material. If possible, leave it uncovered for a day or two to allow the odor to dissipate further.

It is not unusual to notice fungi or mold on the surface of peat substrates, especially after opening the packaging. Because peat contains a very high amount of organic matter, it can naturally attract saprophytic fungi, which feed on dead plant material and are generally harmless to plants. To reduce their presence, mix and aerate the substrate thoroughly after opening to improve airflow. Proper storage conditions, especially good ventilation and lower humidity, can also help minimize fungal growth.

Hortimed Young Plant Substrate is suitable for a wide range of plants, including vegetables, flowers, herbs, and ornamental species. It is especially effective during the early stages of growth, such as seed starting and transplanting, helping young plants establish strong root systems and promoting healthy, vigorous development.

The availability of NPK fertilizer in a substrate depends on the type of fertilizer used, irrigation practices, temperature, and plant uptake. In general, standard starter fertilizer in a substrate supports plants for the first few weeks, while controlled-release fertilizers can remain effective for several months. As plants grow, nutrients are gradually used up or lewashed out through watering, so additional fertilization is often needed during cultivation to maintain optimal growth.

Peat moss is primarily made of decomposed sphagnum moss and other organic plant materials that have accumulated naturally over thousands of years in bog environments.

Hortimed’s natural peat moss helps create a healthy growing environment by improving water availability, especially during dry periods, and enhancing air circulation around the roots. It also supports a loose, well-draining structure that encourages strong root development, while contributing to gradual nutrient availability and promoting beneficial microbial activity in the soil.