I also used my summer holidays to change a part of my garden. I've expanded my terrace by a wooden construction to meet our space requirements.
Unfortunately I had to sacrify the old "habitat" and some area from my crocus lawn
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I reused previous collected sand stones and new ones from a house demolition to build the new, larger wall. I refilled the free space with the old loamy soil as fundament and added a new mixture of sand and compost on top (20-40cm).
Pictures show status before and after the renovation and the bulb harvest.
We wondered how many bulbs have grown/spread on only 3.5m². My wife helped me with the utmost care to dig out the bulbs within almost a half day of hard work. The loamy soil was partly hard like a stone!
I hope the new soil will much better please the crocus corms which remained generally quite tiny.
Finally, last Sunday I could close part one of the project, finished after ~1.5 weeks of work, sweat and hefty back paines! But the result pleased us - there is much more room now for bulbs expansion
Part two will be started in early winter to remove some weed scrub and replanting of roses.