Zaadbommen Groothandel -

| Factor | Positive | Negative | |--------|----------|-----------| | Germination rate | 60–80% in controlled lab tests | As low as 20–30% in dry urban soil | | Species appropriateness | Wholesale mixes can be tailored | Generic mixes may introduce non-local genotypes | | Seedling survival | Clay protects against birds | High competition from weeds if thrown on fertile soil |