After months of rain we are finally in Spring! I’m sure most of you are knee deep in weeds and your mature plants are growing crazy which brings us to this month’s topic of pruning. As I mentioned several months ago, most California native plants bloom in March and April. Then they will began a vegetative growth spurt that will end in early September after which they will go into a dormant period due to our Mediterranean climate.
So how do we take advantage of the growth cycle to prune the natives in our gardens? My theory is to follow the bloom and seed transition. As I have discussed before, pruning during flower production is not productive. However, after flowers have gone to seed, it’s time to prune.
Pruning can vary depending on the genus and/or species of each plant. For example, Baccharis pilularis (coyote brush) can be cut to the ground and it will come back with a beautiful flush of new growth. On the other hand, Arctostaphylos species (Manzanitas) and Ceanothus species can be shaped but no more than what is needed to maintain their desirable size. Salvia species are late bloomers, so when they are finished blooming you can prune off the old flower stocks to promote a more compact plant. Perennials, such as Heuchera species and Iris douglasiana (Douglas iris), will respond to the removal of old leaves and flower stock pruning. California native grasses can also be cut back after their seed head production to create a more desirable appearance.
In summary, April and May are great months to prune California native plants lightly to promote a more desirable shape. If you have any specific questions, please feel free to contact me. Hope you have an enjoyable summer. Until our next newsletter in the Fall, Happy Gardening.
-John Nowak, Plant Sale co-Chairperson