Sow green manure

In Gardeners World episode 25 2015, Monty Don tackles some seasonal gardening jobs at Longmeadow and guest presenter Matthew Wilson has some ideas to brighten up a dark, north-facing wall.     Gardeners World episode 25 2015:   Divide congested agapanthus Although agapanthus like their roots constricted, to improve flowering they should periodically be divided and potted on. This can be done in early autumn, after plants have finished flowering, or between spring and early summer. As the roots can be very tough it is best to use either an old bread knife or other cutting implement with serrated edge, […]