Gardening Tips and Resprouting
If you wish to grow resprouters from seed, then expect at least six to eight years before the plant is big enough to flower. During the first few years it will shunt its resources into the rootstock and remain a runt. It is best not to prune the young plant until you notice some buds on the rootstock or until it has flowered once. Even resprouting trees, like
Wagon Tree - Protea nitida, may take five to eight years to develop the rootstock before spurting to a one metre multistemmed shrub and flowering at about 12 years. Thereafter, the removal of all but one of the stems will encourage a tree form, or periodic removal of all stems will encourage a multistemmed form.
By contrast, plants which cannot resprout should never be pruned below the existing leaves: there are no subcortical buds and the stem will merely die. If you wish to take blossoms for the vase then the trick with this species is to train them as young plants.
Judicious, regular pinching out of the terminal buds will result in a busy shrub, even in the species which are typically tall and lanky. Such trained plants are able to tolerate extensive pruning. This approach is especially valuable with species such as Blushing Bride - Serruria florida and Marsh Rose - Orothamnus zeyheri, which are otherwise very spindly and short-lived. Pruning also rejuvenates bushes allowing them to live to a far riper age. Another advantage is that since there are more branches you will obtain more blossoms. Remember, though, never to prune below the level of the healthy leaves: old, lower leaves - once they start going paler - have subcortical buds with reduced viability!
Have a look at What is Resprouting?
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