The best soil mix for potted grasses is typically four-fifths John Innes No 2 compost mixed with one-fifth multi-purpose compost.
This blend offers several advantages for successfully growing grasses in containers:
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John Innes No. 2 Compost: This provides a good, loam-based foundation. It offers essential nutrients and a stable structure for the roots. Its weight also helps keep taller grasses from tipping over in pots.
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Multi-purpose Compost: Adding a portion of multi-purpose compost lightens the overall mix, improving drainage and aeration. This is important because grasses, while generally adaptable, dislike consistently waterlogged conditions.
Here's a simple breakdown:
| Compost Type | Proportion | Purpose |
|---|---|---|
| John Innes No. 2 | 4/5 | Provides nutrients, structure, and weight for stability. |
| Multi-purpose Compost | 1/5 | Improves drainage and aeration, preventing waterlogging. |
Additional Considerations:
- Fertilizer: While grasses generally don't need heavy feeding, a light application of general-purpose fertilizer in early spring can encourage healthy new growth. Mulching and top-dressing are also beneficial.
- Drainage: Regardless of the compost mix, ensure your pots have adequate drainage holes to prevent water from accumulating at the bottom.
By using this well-balanced soil mixture, you create an optimal growing environment that supports healthy growth and vibrant foliage for your potted grasses.
