Hinahina, Kipukai, Beach Heliotrope and relatives for LEI DAY

By Heidi Bornhorst

For many, many years I have been a Lei Day Volunteer at the Mayor’s Celebration at Kapi`olani park.  It is such an amazing event and I’ve learned and seen so much every year.  Since 1984 in fact !  Yikes

I was first asked to kokua with plant ID when I was working right across the street at the Honolulu Zoo as Zoo Horticulturist.  I was reluctant to leave work, even for a few hours,  as some of my landscape crew were on the kolohe side.

Kupuna Beatrice Krauss, our famed Ethnobotanist, was a fellow lei plant identifier and any time with her was a precious learning experience.  As she got older, she would ask me to drive her, and again, more time with someone so akamai and kind, a Hawaii woman Scientist, ahead of her time.

I told myself when Aunty Bea is pau I will be pau too.  But over the years I have realized what a gift it is to volunteer with this job.  We get to see all the contest lei as they are delivered at 7 a.m.   So amazing, creative and so much time and energy to grow, select, clean and prep and then craft the lei.  Timing is vital for freshness and for flowers, like ilima buds to be open.

One year there was a City-wide strike and we had to move the contest at the Hilton Hawaiian Village, they also roped me into being a judge.  Never again!  To me , all of them are winners.  Identifying the flowers, ferns, nuts and lei fibers is challenging but way easier for me!

This year there were some stunners, plants with mixed silvery patterns, in the Heliotrope family Boraginaceae.  We had native Hawaiian Hinahina, the lei flower of Kaho`olawe, an endemic native Hawaiian plant;  combined with Kipukai, an indigenous Hawaiian plant, and Beach Heliotrope Tree or Tahinu, which is an import, that looks and acts like a native coastal and xeric tree.

This twisty silvery lei combo was so amazing!  After doing our volunteer ID job  in the early morning we sometimes get a chance to talk to the lei makers.

I was talking to an inspiring and creative young lei maker, Mary Moriarty Jones.  I asked her where she collected all those lovely plants or if she grew them herself.  We talked about them all being in the Boraginaceae plant family.

One characteristic to identify this family is that the flowers are arranged in a helicoid cyme.  It twists to open like the fiddlehead of a fern, and the flowers bloom one by one along the curving floral stalk.

They also tend to have silvery hairs on their leaves.  These reflect light and give the silvery Hinahina color.  As a xeric adaptation to thrive in dry salty climates the silvery leaf hairs reflect light and also trap moisture and conserve it for the plant as it respires.

This silvery beauty to our eyes is how the plants have thrived for the millennia in harsh dry salty environments.

To grow them for the long term it’s good to understand where they came from and adapt your garden methods accordingly.  They need well drained soil and full sun.  They are more difficult to grow in pots than in the ground as they really need to spread their roots far and wide (not deep). They like daily watering to get established and then less and less water as their roots spread and adapt.

As my old boss and mentor Masa Yamauchi would say,  “Observe your plants closely and water only as needed”.

This is a skill we can all learn and cultivate.  Just as we can learn to grow our own rare and wonderful lei plants.

Advertisement

Silver Buttonwood trees – Horticultural Legacy at our Botanical gardensHawaii

 

Q: What are those gorgeous silvery street and park trees?  Some are at Sandys Beach, some Giant ones are on Pa`alea street in Palolo Valley, and some are at Ala Moana beach park.  Please inform us about these

Mahalo, M. Silva, Palolo

A: Silver buttonwood trees! AKA Sea Mulberry, or Button Mangrove.  Conocarpus erecta is the Latin name.  they grow naturally in mangrove swamps and are in the Combretaceae plant family, they have a very interesting horticultural history that I am happy to share.

As you may know they are very wind resistant, xeric (drought tolerant) and salt tolerant.  The bark and gnarly trunks are very attractive, especially as the trees mature.  You can make lovely lei with them.  Keiki can make a fun lei using masking tape and the leaves – easy and gorgeous!

 

HB- silver bttnwd tree -landscape

Silver Buttonwood amidst Carissa, Rosemary and Wax Ficus

 

At Lei Day in Kapiolani Park this year (and a HUGE mahalo to all the dedicated City of Honolulu, Parks and Recreation and Honolulu Botanical Garden Employees and Volunteers, who organized and coordinated that major public, free event in our park) we saw some fab lei, using various parts of silver button wood trees.  Some used the fruit clusters, some used the leaves, some crafted the leaves into silver “rose” buds and so on.

Our late mentor Paul Weissich had just become Director of the Honolulu Botanical Gardens (HBG) in 1957.  He was reviewing all of the interesting plants growing in the nursery and lath houses at Foster Botanical garden (FBG).

Weissich found a flat of seedlings.  Some were green and some were silvery.  One keiki was super silvery.

 

HB-silver buttonwood tree

Silver Buttonwood tree in a salt Drenched, Hot, Dry Diamond Head, coastal Garden; See How it “Lights UP” the landscape?

 

He selected the silveriest of the silvers and had them potted up into larger individual pots. The best, consistently silver one was selected and more were propagated from air layers. He watched over them and had the expert plant propagators nurture and grow them up. This is a prime example of ‘Horticultural selection’.

He planted a bunch of them at Ala Moana beach park, which was an adjunct Botanic garden back in those days (and still has his legacy of tough, salt tolerant interesting, rare and unusual trees growing).

A mixed silver and green hedge of them is still growing today around the tennis courts at McCoy pavilion.

One of the silveriest was planted at Foster Garden and its gnarly and sprawly and has a growth habit something like an ancient time gnarled Olive tree.  We have been talking about making this an Exceptional Tree.

Over the years more of the silvery trees were grown and planted in beach parks like Sandys and as shady tough street trees in Oahu neighborhoods. They make a tough specimen tree (especially nice when up lit with solar lights for your “Moon Light Garden”), a good hedge or windbreak.

Button woods are native to a broad area from the Bahamas, to the Caribbean coastal tropics and all the way to West tropical Africa.

This is one of the many Horticultural legacies of Paul Weissich who passed away this year at age 93.  He really grew our beautiful and amazing botanic gardens here on Oahu. His legacy is our five Honolulu Botanical Gardens: Foster Lili’uokalani, Wahiawa, Koko Crater and Ho`omaluhia, as well as people like me and my Husband Clark whose career and lives he nurtured, just like that flat of keiki silver buttonwood trees all those years ago!

 

HB-silver buttonwoord lei

Epic Silver themed Kupuna lei featuring Fruits of silver Buttonwood, Delicate Baby’s Breath, Hinahina and silver leaf.