Vanessa Elms of Old House Gardens Heirloom Bulbs says ‘When the foliage yellows, empty the bulbs from the pots, dry completely, remove the foliage, and store in a cool, dry, well ventilated spot until it’s time to replant them in the garden in the fall. This doesn’t mean you have to discard the outgoing plants though. Pot planted bulbs tend to perform best in their first year so most gardeners tend to plant afresh each fall. Applying Fish, Blood & Bone as the bulbs start to die down also aids regeneration and will be a benefit to all bulbs.’ What to do when pot grown bulbs finish flowering To encourage growth and regeneration, Dunbar continues, ‘Sprinkle a small amount of Bulb Starter under the bulbs when planting to encourage them to develop a secondary root system, this helps the plants take up more feed and regenerate the following year. Repeat, gradually layering bulbs and compost, ending with the earliest flowering bulbs just below the soil's surface. Starting with the larger later flowering bulbs plant them at roughly three times their height below the pot’s brim. Go for a selection that includes early, mid and late spring bloomers. ‘Much like the dish it involves bulbs being planted in layers, so it is key to choose varieties with different planting depths.’Ĭhoose three – or if you are feeling ambitious five – varieties of spring flowering bulb for a large container. ‘If you’re planting your bulbs in pots, lasagne planting is a popular method to get the most from them,’ says Dan Dunbar, Hillier Bulb Expert.
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