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Soil & Fertiliser
Die Bio torffreie Hortensienerde von Patzer ist für Hortensien, Rhododendren und Heidelbeeren vorgesehen. Das 18-l-Spezialsubstrat enthält Terra Preta, ist laut Verpackung wasserspeichernd und kommt ohne Torf aus. Für Pflanzgefäße und geeignete Gartenstandorte verwendbar.
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Patzer organic peat-free hydrangea compost is a specialist growing medium for hydrangeas, rhododendrons and blueberries. It is intended for plants that favour a humus-rich, evenly moist root environment tailored to their particular needs.
The visible packaging identifies the compost as organic, peat-free and made with terra preta. It also states that the mix retains water. The bag contains 18 litres, and the front carries a claim of 74% CO₂ savings.
For planting or repotting, add the compost loosely, position the root ball at its previous depth and fill around it. Water thoroughly afterwards and allow all excess water to drain. In alkaline garden soil, a generously prepared continuous bed or a container is generally preferable to a small isolated planting pocket.
Check the nutrient declaration and exact pH on the back of the bag before use. Any supplementary feeding should reflect the plant species and whether the compost already contains starter fertiliser.
The essentials first, followed by clear, practical details for every care topic.
Water thoroughly once after planting, until excess water runs from the drainage holes. During spring and summer, water again as needed when a finger test shows that the top 2–3 cm is slightly dry; check daily in hot weather. Water less often in autumn and winter, but do not allow the root ball to dry out completely. Empty saucers and always prevent waterlogging.
The compost itself has no light requirement. Hydrangeas, rhododendrons and blueberries grown in it generally prefer bright conditions or partial shade, depending on species and cultivar; strong midday sun is suitable only where root moisture remains reliable.
Intended for containers with drainage holes and suitable humus-rich areas of the garden. Where soil is highly alkaline, use a generously prepared bed, raised bed or container, and avoid lime-rich building materials near the roots.
Use the compost when both the ground and root ball are free from frost. Moderate conditions suit the intended plants; protect newly potted specimens from late frost, extreme heat and rapid drying.
Atmospheric humidity is not critical to the compost. Even moisture combined with good aeration is more important, as persistently wet and airless conditions can damage roots.
An organic peat-free specialist growing medium containing terra preta and described on the packaging as water-retaining. It is intended for hydrangeas, rhododendrons and blueberries; compare the declared pH on the back of the bag with the needs of the specific plant before use.
A moderate, low-salt nitrogen supply with adequate potassium, magnesium and plant-available iron is appropriate. Avoid excessive phosphate and lime; blueberries are particularly sensitive to high salt levels and an overly high pH.
Check the nutrient declaration first. If the compost is pre-fertilised, begin supplementary feeding only after the stated feeding period; without a reserve fertiliser, start after about 2–4 weeks during the April-to-August growing season. Apply a rhododendron, hydrangea or berry fertiliser at the label rate, using the lowest stated dose for sensitive blueberries; in containers, liquid feed is usually applied every 2–4 weeks and stopped from September.
Moisten the root ball thoroughly before planting. Choose a container with open drainage holes, add some compost, set the plant at its previous depth and fill loosely around the sides. Firm gently, leave a watering rim and water thoroughly; do not bury the stem base or root collar more deeply than before.
Spacing depends on species and mature size: compact hydrangeas generally need about 0.8–1.2 m, larger rhododendrons about 1–2 m, and cultivated blueberries about 1–1.5 m. In containers, use one plant per appropriately sized pot unless the cultivar guidance states otherwise.
The growing medium does not flower, but it supports the cultivation of flowering hydrangeas and rhododendrons. In some hydrangeas, bloom colour also depends on the cultivar, pH and aluminium availability; this compost alone does not guarantee blue flowers.
The compost itself requires no pruning. Pruning depends on the plant: cut hydrangeas only according to their flowering group, generally limit rhododendrons to deadheading and light tidying, and thin blueberries selectively in late winter.
Repot container plants in spring or after flowering when roots densely fill the pot, water is absorbed poorly or growth declines. Inspection every 2–3 years is generally useful; remove loose spent material and trim damaged roots cleanly.
Raise containers and shelter them from excessive winter rain without allowing the mix to dry out completely. On frost-free days, check moisture and water sparingly but thoroughly, always avoiding waterlogging. Insulate pots with fleece or hessian, and store opened compost sealed and dry.
The compost does not determine winter hardiness; species, cultivar, site and container size are decisive. Many garden hydrangeas, rhododendrons and cultivated blueberries are hardy in Austria, but young plants and container-grown specimens may require regional protection from root frost and late frosts.
A ready-to-use consumable growing medium for perennial plants. Reseal opened bags and store them dry and protected from saturation; healthy used compost may be incorporated in small quantities as a soil improver after repotting.
Net volume shown on the visible packaging: 18 litres. Coverage depends on container size, the volume of the existing root ball and the required filling depth.
Recommendation: choose a pot with drainage holes that is approximately 5–10 cm wider than the existing root ball. Do not place very small plants directly into oversized containers; 18 litres is the stated bag volume, not a required pot size.
A Patzer Erden branded product. The visible front states that it contains terra preta and is organic and peat-free, but it does not show a manufacturing country or complete raw-material provenance; consult the declaration on the reverse for those details.
This specialist compost is not the first recommendation for seeds or delicate cuttings, as its structure and nutrient profile are intended for larger acid-loving plants. Use a low-salt seed or propagation compost and transplant established young plants into this mix later.
Not intended for consumption. Avoid breathing dust, wear gloves if skin is sensitive and wash hands after handling. Prevent small children and pets from ingesting the material, and follow all binding safety and ingredient information on the package.
Persistent saturation may cause oxygen shortage, root rot and fungus gnats, while severe drying can make the mix difficult to rewet. Alkaline irrigation water may gradually raise pH and promote chlorosis. If white fungal growth appears, reduce watering and loosen the surface; harmless decomposer fungi can occur in organic growing media.
Note: Location, season, pot size and weather can change the plant’s actual care needs.
