Our back yard plant testing area will have some new inhabitants as soon as it dries out enough for us to do some earthwork. For now, the plants are sitting in their pots, waiting.
Scroll down to see what’s going in the ground next.
Our back yard plant testing area will have some new inhabitants as soon as it dries out enough for us to do some earthwork. For now, the plants are sitting in their pots, waiting.
Scroll down to see what’s going in the ground next.

Senecio mandralescae
This is a daisy. Although it doesn’t look much like one, it’s in the same family as your average marguerite. This is a very popular drought tolerant ground cover used in Southern California and the Bay Area. Supposedly, it can survive in Sacramento as well. We’ll see.

Aloe leaf detail

Aloe plant in bud
This nifty aloe is supposed to be frost hardy in the Central Valley. It has interesting leaves and as a bonus gets typical red, tubular aloe type flowers that should attract hummingbirds.

Chondropetalum tectorum leaf detail
The rain garden area will get a Cape Rush (Chondropetalum tectorum), a large, bold grass-like plant from South Africa. This plant supposedly likes wet conditions during the rainy season that dry out as the year progresses.
The plant gets over six feet tall – definitely a bold, focal point.

Grevillea 'Coastal Gem' plant
The hummingbird garden will get a Grevillea ‘Coastal Gem’, a compact gray shrub with numerous interesting red flowers in early spring. There will also be an Aloe ‘Pink Blush’, a compact succulent with – as the name says – a pink blush to the leaves. It has red, tubular flowers that should also please the hummingbirds.

Leucadendron salignum 'Golden Tip'
Another distinctive South African plant, Leucadendron salignum ‘Golden Tip’ will contrast with an existing large bronze New Zealand flax. The cut stems and flowers are very interesting in cut flower arrangements, the plant is evergreen and attractive year round. It takes very little water once established. The only drawback is that it can be tricky to grow – it seems to be one of those plants that is either happy the way things are and thrives on neglect or it just suicides.
A couple of medium sized New Zealand flaxes will join the collection as well. ‘Sundowner’ has stiffly held red-bronze leaves and grows to five feet tall. ‘Tricolor’ has yellow and green variegated leaves that droop, with a distinct red band at the edges. By coincidence, the yellow in the leaves is similar to the yellow in the Leucadendron. We’ll probably place something between the two just to set them off a bit from each other.

Phormium 'Sundowner'

Phormium 'Tricolor'

Phormium 'Tricolor' plant in pot

A Helleborus orientalis ‘Blue Lady’ will go in a shaded area, with columbine and coral bells. The flowers are a solid deep maroon-magenta color on plants about a foot and a half high. It’s a great flower color, but the blue name is misleading, since neither the flowers nor the leaves has a blue cast. Even better, it blooms in mid-January.

A variegated lily of the Nile, Agapanthus ‘Little White Bird’ will mingle with Purple Three Awn (Aristida purpurea). The flowers are supposed to grow up to around three feet tall, so the base will be a mix of the grass and the Agapanthus, while the aggie’s flowers will float above the purplish flower heads of the aristida. Should be an interesting show. If not, we’ll move things around and try something else. The mix of agapanthus, often maligned as overused, and ornamental grasses creates a fresh look contrasting the solid flowers against the feathery grasses.

The rain garden, in this case a fancy word for a depressed area in the landscape where rain water can pond and slowly infiltrate back into the soil, is partially installed. The trick here is that we’re blessed with heavy clay soil, so we didn’t know if the rain garden would take days or weeks to drain. So far, it seems to empty out after about three to four days of dry weather.
Another trick is that the plants in the lower portions have to survive immersion for indeterminate periods. For this, we’re testing various meadow grasses and perennials to see what works. So far, everything appears to be thriving despite multiple immersions. The lowest point is planted with Deschampsia caespitosa and Carex pansa, with some Lupinus polyphyllus thrown in. Areas that are not normally subject to immersion have Festuca idahoensis ‘Siskiyou Blue’, Muhlenbergia rigens, Calamagrostis acutifolia, Schizachyrium scoparium and Achillea millefolium ‘Paprika’. In summer, the rain garden will become a flowering meadow adjacent to an outdoor dining area.
When complete, the rain garden will overflow into a sediment trap, then into a powered sump that will remove the excess water before the house starts to float. Hopefully with time, biological processes of root growth, burrowing worms and insects will naturally introduce organic matter into the underlying clay and make it more permeable.
Right now, it just looks like a large mud puddle, but we’re hoping that it will transform into a beautiful green area with an added ecological function.