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Planting on solid granite

nachocarl

By nachocarl
in OHANA NUI  -  OFF TOPIC SUB-FORUM

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nachocarl Mentor

nachocarl

Posted
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I just found out that from one of the neighbors that Nacholandia 2.0 was originally going to have a larger flat area for the backyard but the builder hit solid granite and could not dig any further without blasting, hence the retaining wall and smaller flat area (see pic)...I am looking at the present landscape and there are palms planted on this rock, Queens and Washy, as well as bougainvillea, hawthorns, caped honeysuckle and lantana, but it presents an interesting challenge. I would like to be "water wise tropical" in planting, so it would seem that Madagascar is the place to look. This is a west facing hill with what I would think is perfect drainage so a lot of dypsis maybe in order, but wanted to peoples thoughts on what to plant.

Thoughts. :hmm:

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Carl

Vista, CA

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MattyB Grand Master

MattyB

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If you water with drip so the saturation goes down to the rock the roots will pancake out across that rock and they absolutely love it. Most soils get soggier and more anaerobic the deeper they go, but that rock will keep your palm roots very happy. Drip irrigation and mulch is a must though.

Matt Bradford

"Manambe Lavaka"

Spring Valley, CA (8.5 miles inland from San Diego Bay)

10B on the hill (635 ft. elevation)

9B in the canyon (520 ft. elevation)

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LJG Grand Master

LJG

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Carl, stop by my house and you can see my hillside. Same as yours on solid granite. Mulching and composting is a must but drip is not. I run MP Rotators on my hillside and it gets the whole hillside wet. Zero runoff.

I have some rehab plants sitting around you can have if you want too.

Len

Vista, CA (Zone 10a)

Shadowridge Area

"Show me your garden and I shall tell you what you are."

-- Alfred Austin

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MattyB Grand Master

MattyB

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Thanks for the correction Len. I always forget about those low volume sprayers. How long do you run a typical station that is spraying on the slope?

Matt Bradford

"Manambe Lavaka"

Spring Valley, CA (8.5 miles inland from San Diego Bay)

10B on the hill (635 ft. elevation)

9B in the canyon (520 ft. elevation)

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DoomsDave Grand Master

DoomsDave

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This a bit similar to plants growing atop the lime-stone in south Florida. Some plants do love that.

Don't forget to water.

Have to dig up some pics.

Let's keep our forum fun and friendly.

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LJG Grand Master

LJG

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Matt, I run the zone for 10 minutes than come back a second time for 10 after the first run of zones completes. Breaking it up has really proven to be a great way to get deep watering and avoid run off.

Len

Vista, CA (Zone 10a)

Shadowridge Area

"Show me your garden and I shall tell you what you are."

-- Alfred Austin

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Justin Veteran

Justin

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I have a solid granite hillside, and most stuff is happy, but I've killed a couple Triangle palms because the hole I backfilled with actual dirt filled up with water during the winter rains, then rotted because it couldn't drain.

Resident of Puerto de la Cruz, Tenerife, San Diego, CA and Pahoa, HI.  Former garden in Vista, CA.  Garden Photos

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