Substrate is the growing medium where roots develop: it provides support, water retention, and structure. Fertilizer, on the other hand, nourishes that medium with the minerals and organic matter that plants need to grow. In an urban garden, the ideal approach is to combine both: a light, well-structured substrate along with a quality organic fertilizer such as worm castings.

It is a universal ecological substrate specifically formulated for urban gardens, enriched with worm castings. Unlike conventional soil or peat, this mixture is balanced to provide lightness, drainage, and nutrients from the very first moment, without the need to add other products. It is the ideal option if you want to start growing without complications.

Worm castings, also known as vermicompost, is a 100% natural organic amendment produced by worms that break down organic matter. It is one of the most complete and bioavailable fertilizers in existence: it improves soil fertility, stimulates root development, and boosts organic crops without chemical products. Unlike other fertilizers, it acts progressively and does not burn plants.

Yes. Both the substrate mix and the worm castings are designed to work in any type of container or urban growing space: pots, grow tables, raised beds, or terrace or balcony planters. The size of the space doesn't matter: what matters is the quality of the substrate you start with.

A layer of about 2 to 3 centimeters of worm castings mixed with the existing soil is enough to effectively nourish the substrate. It can be incorporated at the beginning of the crop cycle or as a maintenance amendment between seasons. Applying it in autumn is especially useful for preparing the soil for the next sowing.

Yes. Earthworm humus is 100% natural, with no chemical additives, and the substrate mix is formulated based on ecological criteria. Both products are safe for growing food for personal consumption. Urban Green Club is a certified B Corp company, which implies a verified commitment to consistency between its products and its environmental values.

The substrate can be reused between seasons, but it is important to revitalize it with an organic amendment like worm castings to replenish the nutrients that previous crops have absorbed. If the substrate is very compacted or depleted, mixing it partially with new substrate is the best solution to ensure a good start.

If you are setting up an urban garden from scratch, the Urban Garden Mix enriched with worm castings is the most complete option: it already incorporates organic fertilizer and substrate in a single product. If you already have soil or substrate and just want to improve it, 100% natural worm castings are the perfect supplement to nourish the soil progressively and naturally.