Foliage Follow-up - May 2014 Heatwave Edition

As I've mentioned (ad nauseum), we're in the middle of yet another spring heatwave.  The heat reached a ridiculous level for awhile yesterday - not that any temperature above 80F (27C) in May isn't ridiculous.

Nearly 105F (40.5C) outside at 2pm

The effects on the flowering plants have been obvious but the weather has impacted my foliage plants as well.  There are clear winners, plants that continue to thrive under heat and drought conditions, and losers, plants that are struggling, so I thought I'd use this month's Foliage Follow-up, the meme sponsored by Pam at Digging, to highlight some of each.

In the popular plants category, Yucca 'Bright Star' is doing so well that I kept myself awake recently wondering where I could put more.  My 3, planted in January in the backyard border, are still small but they get prettier with each passing month.

In contrast, Acacia cognata 'Cousin Itt,' another popular newcomer reputed to be drought tolerant, has had more difficulty adapting to the abrupt increases in temperature.  Prior to the first heatwave, I'd have said the Acacia in the large pot near to the house was the best-looking of its brethren; however, despite receiving only morning sun and regular watering, it lost a lot of its leaves and now has a visibly thinner appearance.  To be fair, the 4 plants in the ground experienced less leaf loss than the one in the pot even though they get more sun and less attention.

Acacia cognata 'Cousin Itt' has receding foliage

Leaf debris dropped by 'Cousin Itt'

In the Japanese maple category, 'Sango Kaku,' growing in a partial shade location next to the garage, and 'Mikawa Yatsubusa,' which gets mid-afternoon shade in the backyard, are both looking good despite exposure to heat and wind.

Acer palmatum 'Sango Kaku' hasn't shown any ill effects to the heat thus far

Acer palmatum 'Mikawa Yatsubusa' has only the slightest leaf tip burn

This is not the case with Acer palmatum 'Purple Ghost' despite extra water the other 2 didn't receive.  'Purple Ghost' stands on the southeast side of the house and, although it gets some shade from nearby trees, it probably gets more sun overall that the other 2.  The wind that whips through that area as it moves around the house  may be an even more significant issue.  And, of course, the visits by raccoons and a gopher can't help things.  I'm afraid that 'Purple Ghost' may have to be moved in the fall (if it lives that long).

My sad 'Purple Ghost'

All my Phormium are doing well.  They don't appear to notice the heat at all.

Phormium 'Amazing Red'

That's not true of Cordyline 'Renegade,' despite similarities in appearance and place of origin.  Perhaps, as in the case of the Acacia cognata described above, part of the problem is that my Cordyline are in pots.

'Renegade's' growth is stunted and the foliage has lost some of its intense color while the Pelargonium planted with it enjoys its sunny setting

In the decorative shrub category, Agonis flexuosa 'Nana' is performing very well in full sun conditions in the windy southeast side yard.

Justicia brandegeeana,' on the other hand, doesn't seem happy.  Although it seemed fine before the temperatures soared this week, it clearly needs more shade under current conditions.  I'll have to find another spot for it.

This Justicia brandegeeana is frying - the other one, in partial afternoon shade, is faring better

Some groundcovers are doing better than others as well.  The St. Johnswort is slow growing but seemingly impervious to heat.  The red hook sedge gets a touch of shade during the first half of the day but takes the sun's full blast from mid-day with no ill effects thus far.  But my experiment in stretching my zone to include Nepeta 'Pink Cat' was short-lived.

Hypericum x moserianum 'Tricolor'

Uncinia uncinata 'Rubra' in the midst of our 2nd heatwave

Nepeta 'Pink Cat' was dead after the 1st heatwave

The ugliest parts of my garden right now are the remaining areas of lawn, most of which are quickly turning straw yellow even though I've delivered far more water during the current heatwave than I did during the first one.  I've been reading about drought tolerant grasses, grass substitutes, and even fake grass.  Although we've eliminated various sections of grass since we moved in 3 years ago and I'd already slated other sections to go, I hadn't originally planned to take it all out but it may come to that.  Looking at this, in mid-May, is depressing:

This patch of lawn in the backyard was mostly green just a week ago

This, in contrast, is not depressing.

Lomandra 'Breeze'

Stipa tenuissima

If current conditions represent the "new normal," then I need plants that are better at adapting to sudden temperature fluctuations, more intense heat, and less water.  At present, my plants aren't the only ones having trouble adapting.  Heat and low humidity (plus dying plants) has made me cranky.  In contrast, at least one of my household companions takes the heat in stride.

Pipig has no problem with the heat despite being covered by fur

Please visit Pam at Digging to read her Foliage Follow-up post and to find links to other gardeners' flaunting their foliage.

Bloom Day - May 2014

May is usually one of the very best months in the garden here.  This year, we're sitting through our second major heatwave.  The Santa Ana winds are blowing and the risk of wildfire is high.  These are conditions we generally face in September and October, not in spring.  The heat, dry air, and lack of rain has had impact on the garden.  Plants that were in full bloom last year at this time, like the Alstroemeria and the Argyranthemum, have already bloomed out.  Others, like the Iris germanica and Digitalis purpurea, have produced only sporadic bloom thus far.  I've lost a few plants and expect to lose more.  However, some plants are thriving, most notably the Agapanthus.

On May 20th last year, I posted about the arrival of masses of Agapanthus buds.  But, on this Bloom Day, the Agapanthus are already in full bloom throughout the garden.

Clumps of Agapanthus below the mimosa tree

More clumps below the California pepper trees

Clumps in the front yard

Other standouts in the backyard include:

Achillea 'Moonshine' and Salvia 'Mystic Spires'

Erysimum linifolium 'Variegatum'

Euphorbia 'Ascot Rainbow'

Hebe 'Patty's Purple'

Leucanthemum x superbum 'Snow Lady'

Some smaller plants showing their resilience in the backyard include:

Anagallis 'Wildcat Mandarin' - flowers close until the sun shines on them

Bulbine frutescens has been blooming continuously since it was planted in early March

Cotula lineariloba 'Big Yellow Moon' forms a mat from which petal-less, disk-shaped flowers spring

Hibiscus trionum, aka flower of an hour, is an annual that produces flowers that survive only a few hours

I love Nigella damascena 'African Bride' but find it hard to place because the white petals can look dingy next to bright whites

The flowers of Scorzonera hispanica smell like chocolate!

I wish I'd bought more of this cherry skullcap (Scutellaria suffrutescens)

The southeast side garden has taken a beating.  In addition to repeated onslaughts by raccoons, there are signs that a gopher is tunneling about there.  The sun and wind also poses challenges in that area.  Still, some plants are holding up well.

Both Acanthus mollis 'Summer Beauty' and Arthropodium cirratum would prefer a less sunny setting but they're troupers

While I was disappointed by the dwarf yellow Anigozanthos, I can't fault this red variety, which has bloomed non-stop since January

Osteospermum ecklonis '3D Silver' doesn't care for the heat but the Ageratum houstonianum 'Blue Horizon' planted from 6-packs only weeks prior to the 1st heatwave are taking the temperatures in stride

Cuphea micropetala 'Candy Corn' is supposed to grow 1-3 feet tall and 1-2 feet wide but this plant is nearly prostrate and is spreading far further than expected

Self-seeded Gaillardia (probably 'Goblin')

Tagetes lemmonii 'Compacta' doesn't mind the heat

In the front yard, the 'Joseph's Coat' rose which was covered with flowers last May, has already produced 2 flushes of bloom and has little to show for itself this May.  The 'Pink Meidiland' shrub roses are blooming, although not as heavily as they did last year.

Other plants are undaunted by the weather conditions.

The indefatigable Cuphea x ignea 'Starfire Pink' may swamp the roses in the front beds

Gaura lindheimeri 'Snow Fountain' has produced its first flush of blooms

Hemerocallis 'Spanish Harlem' continues to pump out new blooms each day

Pelargonium x domesticum 'Georgia Peach' is a reliable bloomer

I caught the final blooms on the pineapple guava in the bed bordering the street.

Feijoa sellowiana grows just inside of the hedge

The vines covering the arbor between the vegetable garden and the dry garden are in full bloom.

Distictis laxiflora interwoven with Trachelospermum jasminoides

The biggest floral splashes in the dry garden are provided by the daylilies.

Hemerocallis 'For Pete's Sake' surrounded by the "weed" Geranium incanum

But a few other plants add subtle interest.

Bright pink Cistus x pulverulentus 'Sunset'

Dorycinium hirsutum, aka Hairy Canary Clover

Globularia x indubia

Groundcovers Thymus praecox 'Pink Chintz' and Teucrium chamaedrys

Finally, there's the slope, which has held up surprisingly well despite limited irrigation.

Centranthus ruber, Oenothera speciosa and Euphorbia 'Dean'Hybrid'

Those are the highlights for this exceptionally hot May Bloom Day in Southern California.  Please visit Carol of May Dreams Gardens, the host of the monthly Garden Bloggers' Bloom Day, to see what's blooming in her garden and to find links to the posts of more than a hundred other contributors.