Wicked Growth Alpine/Rock Garden Plants Fertilizer

$29.99 USD

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Product Description

Compact, Tidy, Covered in Bloom — A Low-Nitrogen 5-10-5 Formula for Rock Gardens

Old Cobblers Farm Wicked Growth 5-10-5 is a low-nitrogen fertilizer made for alpine plants, groundcovers, and the flowering perennials of rockeries and lean, well-drained soils. The 5-10-5 analysis means it carries just 5% nitrogen — enough to keep foliage healthy without pushing the soft, sprawling growth that ruins a rock garden's tight forms — alongside 10% phosphorus for strong roots and bold, long-lasting blooms, and 5% potassium for stress tolerance and flower quality.

Alpine and rock garden plants evolved in lean mountain soils, and they keep their dense cushions, mats, and rosettes precisely because nutrients are scarce. Heavy feeding makes them leggy and floppy; a measured low-nitrogen feed every 6–8 weeks supports flowering and root strength while preserving the compact habit you planted them for. In a rock garden, less is genuinely more — at 20% total analysis, this is one of the lightest feeds in the Wicked Growth line.

Key Benefits

Low nitrogen, compact form — Just 5% nitrogen supports healthy foliage without the soft, leggy growth that destroys tight cushions, mats, and rosettes.

Phosphorus where it counts — 10% phosphorus — double the nitrogen — strengthens roots in lean, fast-draining soils and fuels bold, long-lasting flowers.

Built for lean soils — At 20% total analysis with measured rates, it matches how alpine plants actually evolved to feed: lightly.

Tough-site resilience — 5% potassium supports stress tolerance and flower and foliage quality through sun, wind, and drought between rains.

Every alpine favorite — Sedum, thyme, aubrieta, creeping phlox, saxifrage, hens and chicks, and a dozen more rockery classics — one bag for the whole display.

Simple, sparing rates — ½ cup per 10 sq ft or ¼ cup to 1 cup per plant cluster — a 5 lb bag covers roughly 220 sq ft.

Where to use it: rockeries, alpine beds, gravel gardens, borders, troughs, and container displays of sedum, thyme, aubrieta, creeping phlox (Phlox subulata), arabis, dianthus, edelweiss, rock cress, ice plant, lewisia, alpine pinks, saxifrage, hens and chicks, low-growing campanula, dwarf penstemon, and euphorbia.

Application Instructions

-New plantings: mix ½ cup per 10 sq ft into the topsoil before planting
-Established small plants: ¼–½ cup per plant or cluster
-Established larger clumps and spreaders: 1 cup
Steps:
1. Measure the rate for the plant or area — and when in doubt, use less. Rock garden plants prefer underfeeding to overfeeding.
2. Sprinkle evenly around the plants, keeping granules off the foliage and out of the rosettes and cushions.
3. Work lightly into the soil surface between the stones.
4. Water thoroughly to carry nutrients to the roots.
When and how often: every 6–8 weeks during the active growing season. Avoid over-fertilizing — less is more in rock garden environments.
What NOT to do: do not exceed the rates, do not let granules sit in rosettes or dense mats, and do not feed more often than the schedule — extra nitrogen costs you the compact form these plants are grown for.

Ingredients

5-10-5 NPK Active Blend
A specialized, low-analysis nutrient source providing an optimal balance of low nitrogen, high phosphorus, and potassium for strong root development and bold blooms. Formulated specifically to support alpine and rock garden plants while maintaining their compact, tight cushions — pure performance every 6–8 weeks.

Product Specifications

– NPK Ratio: 5-10-5
– Nitrogen (N): 5% — 0.25 lb per 5 lb bag
– Phosphorus (P): 10% — 0.5 lb per 5 lb bag
– Potassium (K): 5% — 0.25 lb per 5 lb bag
– Total Nutrients: 1 lb per 5 lb bag (20% total analysis)
– Form: granular
– Coverage (5 lb): Approx. 220 sq ft
– Application Rate: ½ cup per 10 sq ft (new plantings); ¼–½ cup small plants, 1 cup large clumps (established)
– Feeding Schedule: Every 6–8 weeks during the active growing season; never over-feed