Ideally when the bulb foliage has died off. Cut seed heads off now and let the foliage die back naturally. Once it's gone yellow, it no longer requires photosynthesis, so is safe for bulbs to be uplifted (gently with a hand trowel) and stored.
If you're moving house this may be impractical or impossible but the longer they're left to soak up sun rays before going dormant, the better next year's display will be. But don't let the foliage vanish entirely as you wont be able to find your bulbs
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Ideally when the bulb foliage has died off. Cut seed heads off now and let the foliage die back naturally. Once it's gone yellow, it no longer requires photosynthesis, so is safe for bulbs to be uplifted (gently with a hand trowel) and stored.
If you're moving house this may be impractical or impossible but the longer they're left to soak up sun rays before going dormant, the better next year's display will be. But don't let the foliage vanish entirely as you wont be able to find your bulbs
Thank you!