Gorgeous Green House

The Renovation Journey of a 1940’s ‘Traditional’ to 2015 ‘Contemporary, Green & Gorgeous’


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Gorgeous Green House Featured in Green Home Magazine

Cover Green home magWe are thrilled that our green message is being picked up by other publications.  Thank you Green Home Magazine for sharing our story.  They have shared an electronic version.  Click here  and go to p.12 to see what a wonderful job they have done!

Green home mag p.12


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Orchid Opportunities

Ancellia africa (Leopard Orchid)

Ancellia africa (Leopard Orchid)

Orchids deserve to be shown off. I think most would agree they are rather notably impressive plants that really deliver on gorgeousness. I challenge all gardeners to take the opportunity to get them out of pots and green houses and into the spaces where they would occur naturally.  It’s obviously best to grow the species the are native/indigenous to your area. There are thousands of species all over the planet, even in the northern hemisphere.  They might not be as showy as the ones you can buy in the supermarket but the are still really pretty and can add a very special point of interest in your garden.

I am really fortunate to have a huge clump that was growing in a Bridelia micrantha.

 I’ve cut off some chunks and this is what I’ve done to replicate it’s natural habitat:

I've got the log which is very hard but have managed to gouge some grooves into to accelerate the rotting process.

1. Taken a log and gouged some grooves into to accelerate its rotting process. If you have a log with a rotten core, plant immediately into the hole, ignore cardboard step.

2.  Tied some cardboard with a 200mm 'lip' to create a 'bough' in tree.

2. Tied some cardboard with a 200mm ‘lip’ to create a ‘bough’ in tree.

3.  Filled it up with wood shavings, leaf mold, soil and a bit of compost

3. Filled it up with wood shavings, leaf mold, soil and a bit of compost.  Tied some hessian to hide the cardboard.

4. Added the magic mixture of 2:3:2, accelerator made from chicken pooh, and lime

4. Added the magic mixture of 2:3:2, accelerator made from chicken pooh, and lime

5.  Planted the orchid.  By the time the cardboard etc. has rotted away the orchid will have attached it's roots to the log

5. Planted the orchid. By the time the cardboard etc. has rotted away the orchid will have attached it’s roots to the log

Attached to living tree with stretchy cloth

I’ve also attached a clump to a living tree creating a hammock with a stretchy fabric.  I’ve filled the hammock with the same mixture as above and once the roots have taken hold will be able to remove the not very attractive acid green cloth.  Probably about 12 months time.


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Green Roof Dream Actualized

Pic courtesy Geoff Nichols

Pic courtesy Geoff Nichols

Imagine our cities with birds and butterflies flitting from building to building. Imagine views from tall buildings that include roof tops full of plants, rich with life and colour and the sound of birdsong and insects. This is starting to happening all over the planet. People are seeking alternatives to the alienating and sterile world of concrete, without moving to the countryside.  Roof gardens provide all of this and much, much more!

I have dreamed of creating my own green roof for so long it hardly seems real that it is now in.  This post is about the benefits of green roofs and quite a detailed ‘How To’ guide for those who wish to do the same. Early inspiration came from the Green Roof Pilot Project (GRPP) at eThekwini which is testing various options that provide healthier urban environments.  This project among others has shown that these living roofs (as they are also called) naturally increase biodiversity and are aesthetically beautiful, but there are numerous other good reasons to seriously consider installing one:dog house roof garden

  • They insulate the house, reducing the amount of cooling and heating required
  • They lower the amount of storm water run-off
  • Improve air quality through the reduction of air borne pollutants, including harmful carbon monoxide.
  • They absorb chemicals and heavy metals from rainwater
  • There are positive climate change impacts via absorption of carbon dioxide and the release of oxygen during photosynthesis.
  • They help insulate for sound
  • They reduce maintenance cost of roofs and increase its lifespan by two to three times.
  • Can assist in the alleviation of food security issues.
  • Provide fire resistance
  • Offer electromagnetic insulation.

There are broadly two options for installation.  One way to go is planting in trays.  I have used the direct method which involves placing the shallow amount of growing medium on top of various protective and drainage layers which I will show step by step.

Before you start though it is imperative to ensure a structural engineer has confirmed that your roof can take the extra load (or if you are building from scratch engineer into the design).

Layer 1:  Waterproofing

Layer 1: Waterproofing

We began by installing a serious waterproofing product called ExtruBit ® .  This stuff looks a bit like wet suit material is flexible and really tough. A company called Bertrade did the installation which involved heat sealing the overlap areas. No mean feat in Durban’s hot and humid February.

The next three layers provide the drainage and help ensure the soil won’t get into the full bores.  Pula Water supplied their amazing drainage mats (Flow-Cell ®) which are sandwiched by geotextile. This was a cinch to install, somewhat reminiscent of playing with Lego as you are rewarded with a very satisfying click as each mat slots into the other!  In addition to ensuring the water will drain

Layers 2 & 3: Geotextile (white) then Flow Cell mats.  Layer 4 on top is Geotextile

Layers 2 & 3: Geotextile (white) then Flow Cell mats.

away they are designed to do so slowly so plants have time to drink.

You are now ready for your soil mix.  My soil has come out of the ground being dug for the water harvesting tank. Not very nutritious so I have mixed it half/half with pine bark compost from Grovida.

Soil coming up on the conveyer

Soil coming up on the conveyer

In addition I have added bags of organic accelerator, agricultural lime and 2:3:2. Over and above general dispersal of the above, each largish plant hole received a handful of the extras to give a nutritional boost.Before we talk the about the most exciting bit which is obviously the plants I have to share with you the less interesting but vitally important info on how to deal with your full bores. This is the area you roof garden will ‘fall’ to (i.e. slope down to) and it is crucial that you have sufficient drainage or your garden will fill up and swim over the edge of it.  To help slow down the process in the event of heavy rain this is what you can do:

1.  Cut or drill holes/grooves into a section of pipe that is the diameter of your full  bore an height of your garden

1. Cut or drill holes/grooves into a section of pipe that is the diameter of your full bore and height of your garden.  Thanks Geoff!

1.  Source pipe the diameter of your fullbore and cut to height of soil

2. Position directly over full bore

2.  Surround the pipe with aprox. 500mm width of gravel encased by bidum

3. Surround the pipe with aprox. 500mm width of gravel encased by bidum

3.  Cover with rock

4. Cover with rocks

 
4. Plant around as you wish

5. Plant around as you wish

Choose your plant species carefully.  It goes without saying your locally indigenous/native plants must be selected and these should be water wise and heat tolerant. Plants that grow in cracks and crevices are ideal.  Bear in mind that the soil is shallow and will dry out quickly.  Plants should (in the main) also be low growing and wind resistant.  Ideally they should also be self seeding to replace themselves when stressed by heat and water fluctuations.

They beauty of using the correct plants means that after they have been established irrigation is seldom required.  Plan to utilize at least one of the many water harvesting options.  Gutters and grey water re-cycling are easily installed. (Detailed posts to follow).

Ecstatic me planting at last!

Ecstatic me planting at last!

For those of you in Durban South Africa here is a list of plants that will do well:

Aellanthus parvifolius, Aptenia cordifolia, Aloe maculata, Aloe cooperii, Bulbine abyssinica, Bulbine natalensis, Cissus quadrangularis, Cissus fragilis, Crassula multicava, 
Crassula hirta, Crassula ovata, Crassula obovata, Crassula perofliat, Crassula vaginata, Aloe rborescens, Aloe rupestris, Aloe thraskii, Aloe van belanii, Cotyledon orbiculata,Delosperma rogers   Hibisucs calphyllus, Kalanchoe thyrsiflora, Nymphoides thunbergiana, Portulacarai afra, Stafpelia ginantea, Vernonia capensis
Aloe van belanii, Crassula, Euphorbia, Venonia capensis

Aloe van belanii, Crassula, Euphorbia, Venonia capensis

more gorgeous hardy indigenous treasures.

Gorgeous hardy indigenous treasures.

I know this garden will give us much joy in the years to come.  I hope you’ve been inspired!

Small pond  awaiting planting to attract the kingfishers

Small pond awaiting planting to attract the kingfishers

What we will look like in a few months time (Pic Courtesy Geoff Nichols)

What we will look like in a few months time (Pic Courtesy Geoff Nichols)

P.S.  I know many of you are desperate for the post on the Vertical Garden.  The scaffolding is still in front of it and the minute it’s down I’ll be able to show you it in all its early splendor.  Here is a little glimpse of what is flowering at the moment.

Streptocarpus sp

Streptocarpus sp

Useful Reference:  Etekwini Guidelines Document


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Vermiculture: gardener’s gold

I have developed quite an emotional attachment to my worms.  For good reason, they are truly amazing and greatly underappreciated creatures.

Gardeners Gold.  the result of vermiculture is the Rolls Royce of compost

Gardeners Gold. the result of vermiculture is the Rolls Royce of compost

If you haven’t yet discovered the joy of worm farming I urge you to give it a go. For the yet to be initiated:

Vermicompost is the product or process of composting using various worms, usually red wigglers, white worms, and other earthworms to create a heterogeneous mixture of decomposing vegetable or food waste, bedding materials, and vermicast. Wikipedia

Earthworms aerate, till and fertilize the soil, breaking down organic waste into plant-available forms, improving the soil structure and nutrient and water-holding qualities of soil.  darwin quoteCurrent farming practices that use chemical fertilizers, pesticides and over-tillage of the soil kills earthworms and other beneficial organisms, leading to poor soil fertility, loss of soil structure and soil erosion. At the same time, rotting organic waste dumped in landfills is polluting our underground water supply and releasing vast amounts of greenhouse gases which contribute to global warming.

Earthworms eat organic waste and give us healthy soil and organic fertilizer in return. The knock on effect is healthy plant growth and food that is significantly more nutritious and delicious.  Farming/gardening without man-made chemicals enables us to avoid poisoning our soil, environment and bodies. This perfect partnership is easy and fun to develop on a smaller scale at home.

There are numerous commercial systems available but you really don’t need a hi-tech operation to get started so go with what your budget allows or make your own.  My

Worm Farm. Simple design.  Effective.

Worm Farm. Simple design. Effective.

son has designed this ingenious system which enables us to maintain the health of the farm and easily harvest the ‘gardener’s gold’.  These simple re-cycled plastic boxes are divided by a section that has holes cut into it.  One side of the box is filled with food until full.  At this point we begin filling the other side leaving the first side to break down further.  As the food disappears the worms will move into the food rich section leaving behind the easy to harvest worm castings which contain up to 100-million microbes per gram – up to 20 times more than ordinary soil!  Added to your garden, these microbes continue to break down organic matter into plant-available forms, thereby enabling plant roots to take up nutrients that would otherwise have stayed bound in the soil. These beneficial organisms also suppress the growth of pathogens, which means healthy soil and healthy plants.  In addition to harvesting the castings we catch the worm wee (leachate) which drips through a hole in the base. It makes a wonderfully nutritious tea when mixed with water.  Tea for plants that is :-).

Rat nibbled aeration patch

Rat nibbled aeration patch

My farms, however, we getting a bit to much attention from other wildlife in the garden.  I realised that the aeration patches had been gnawed through and at least one rat was feasting on my red wrigglers.  I’m all for ‘the cycle of life’ etc. but realised my population was taking to much of a knock.  It was time for some maintenance and harvesting anyway so I got stuck in.  The old aeration patches

Air vent repaired with rat proof metal mesh

Air vent repaired with rat proof metal mesh

were replaced with wired mesh, the harvestable sides were harvested, the worm filled sides set aside and the whole box was given a good clean.  Worms were returned with a note on top to advise other family members to now only feed on the one side (yes it is necessary in my family!). Worms are now safe from predators and I have buckets of gold to mix into my veggies boxes.

repaired and restored

repaired and restored

P.S.  I know many of you are very anxious to see images of the incredible vertical garden.  I ask you to bear with me a little longer.  The scaffolding will be coming down soon and then you will get a much better sense of this exciting project.  If you can’t wait to get started on your own VG but need some help, get hold of the plant wizard James Halle on james@halle.co.za.  

Beautiful organic harvest grown in gardeners gold fed soil

Beautiful organic harvest grown in gardeners gold fed soil


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Designer Compost Bays

Many think the subject of compost is about as exciting as watching grass grow. I’ve long been teased about my obsession with the stuff but noting the 1,397 books available on Amazon I know there is a community out there that are as passionate about  it  as I am.  For example, this is what Bette Midler has to say:

My whole life has been spent waiting for an epiphany, a manifestation of God’s presence, the kind of transcendent,magical experience that let’s you see your place in the big picture. And that is what I had with my first compost heap.

I’ve struggled with compost ‘heaps’ in awkward spaces, then upgraded to bays in rickety fencing (now collapsing) so I’ve been determined to put in a more user-friendly system at the Gorgeous Green House. On the design wish list:

  • at least 3 bays for good rotation
  • sturdy construction
  • opening/gate front for easy turning over and removal

We have a lot of old paving to re-cycle on site so I asked my builder for a quote to build them with the bricks.  Phew, quite a lot more than expected.  Plan B was to ask a fencing company for a quote.  Also quite a lot more than anticipated. This led us tho thinking ‘how hard could it be to dig in a few poles and fence them in’.  We checked out the material costs (a fraction of the fencing company quote) and were further delighted to see the company makes gates that are super easy to install. The result is spectacular. I am thrilled as they will be really easy to use. I’ve had piles of leaves and weeds building up all over the garden so its been wonderful to get them into the correct place awaiting their final home in the veggie garden. Here is our  process:

Fencing stapled around the fram

Fencing stapled around the frame

Poles cemented in and the ready made gates attached

Poles cemented in and the ready made gates attached

Sticks into the bottom (for aeration)

Sticks into the bottom (for aeration)

Layers of 'brown' and 'green'.

Layers of ‘brown’ and ‘green’.

 When presented with the concept of resilience in relation to garden practices words like sustainable, hard-wearing (as in strong) and healthy came to mind.  All of these words describe any vibrant eco-system.  The opportunity for the gardener is then to take our lessons from nature if we want gardens that will thrive without too much intervention.  It is no coincidence that nature just goes about her business (if not interfered with) in a sustainable and resilient way. These are some of the lessons I’ve learned on my gardening journey:

SOIL HEALTH Easy to make Leaf cage

During autumn nature provides her most important harvest:  fallen leaves.  This is the perfect cycle of replenishment to the soil and the provision of nourishment for all life in the ecosystem; yet we sweep up this abundant gift into plastic bags and send it off to land fill.  Come spring we drive to the garden center and buy compost in more plastic bags.  Mulching is vital for soil health and the quality of store-bought compost is not the same as that of its natural counterpart.  Worse still is the application of chemical fertilizer.  Over time it throws out the natural balance of minerals and nutrients and impacts on microbial and other life.  So get mulching and with all your excess leaves, lawn clippings etc. then start composting to improve your soil health. Next investigate the fascinating world of vermiculture (worm farming).  These little creatures can take your soil health even further.

PESTICIDES

Applying chemical pesticides is at best a short-term solution.  It might kill the insect that you believe is destroying your plant but which has, in fact, been providing an important service.   I’ve seen Cussonia spicata and Erythrina lysistemon infested with the most fascinating caterpillars, devouring every available leaf  and yet the plant emerges stronger and more beautiful than before. (Don’t forget that a caterpillar is also a moth or a butterfly and who doesn’t want those lovelies in their garden!).  Bear in mind that a poisoned insect often poisons other wildlife who feed on it and so on up the food chain. If you are desperate to remove insects, do some research on organic alternatives.

COPY NATURE’S ECO-SYSTEMS

Caterpillars and ants also belong

Caterpillars and ants also belong

The most fun I’ve had gardening is copying what occurs naturally.  I’ve done this on a largish scale at my conservancy (converting sugar cane into four biospheres) and on a tiny scale in my 1 500sq my town garden.  What I have learned is that bio-diversity = healthy.  Monoculture requires a lot more maintenance (intervention) and is therefore less resilient. Even surrounded with neighbours paved yards one is able to create, even in the tiniest garden a beautiful haven filled with birds, butterflies, gorgeous colour, cool tranquil spaces, movement, energy, sound and joy. I would recommend developing your garden with these plant groupings in order of priority:

Tranquility under the trees

Tranquility under the trees

Woodland section:  Trees enhance even very small gardens giving us somewhere cool to escape the heat of summer and our homes are more comfortable without excessive direct light.  When researching species, look for trees/shrubs that don’t grow to great heights and give you great ROI.  By that I mean look for trees that attract birds and butterflies and have an appearance that you like i.e. great value in one plant!  Don’t worry about planting them close together, in the forest they have to compete for light so they will make their own way.  Think about which side of the garden you want the shade and plant accordingly.  Bear in mind that some trees are deciduous (good for leaves) but you may lose the shade you want on your veranda in winter.  Most importantly though, if resilience is what you are after, plant locally indigenous as they will need no attention once they are established.  Once you’ve got your trees in think about your understory.  These plants will need to change over time as the shade area increases.  Once again, take a walk through your closest nature reserve and see what is growing happily.  If it is attractive looking there is a very good chance it will be available to buy.

Alternative plants to lawn

Alternative plants to lawn

Grassland section:  Large expanses of lawn are much overrated. The argument for soccer and cricket falls short in most urban gardens as they are generally too small.  Lawn requires more water, fertilizer, weed and insect treatment (and labour) than other parts of the garden. Grass is also mono culture and as far as attracting wildlife to your garden it has little to redeem it.  Why not create a natural grassland habitat?  There are so many gorgeous grasses that attract seed eating birds and an abundance of flowers, aloes, bulbs, small shrubs etc that are a visual delight and will provide hours of entertainment because of the wildlife they attract.

Tiny pond attracts mega wildlife

Tiny pond attracts mega wildlife

Wetland Section:  Ok, the term Wetland may be pushing it for a small garden, but even the tiniest of gardens can support a small pond. They bring a wonderful element to a garden and require very little work.  Even a large plastic tub filled with some water plants (e.g. Cyperus prolifer, Nymphaea nouchali, Nymphoides indica, Zantedeschia aethiopica) works.  My pond is about 1.5 X 1 M and attracts multitudes of dragonflies, and birds including Woolly necked storks!  If you’ve got plants in the water you don’t need to fuss with pumps and the like, the plants keep the water clean for you.  You can even add some fish.  My indigenous tilapia have been going for years in my tiny pond.  

Veggie garden:  On a macro environmental scale, agriculture (monoculture) presents a huge threat to the

Plant some veggies for the planet and your own resilience

Plant some veggies for the planet and your own resilience

environment and therefore the capacity for resilience of all life.  If we all carved out a small space (even if it’s just a sunny windowsill) to grow some food we would be making a contribution to the resilience of the planet as a whole!

Happy Gardening!


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Make Compost with Grass (only). Who Knew?

Conventional composting wisdom dictates that the best compost is a mixture of brown (leaves, twigs etc) and green (lawn weeds etc).

Leaves will also break down into wonderful compost though a bit more slowly.  I shared my leaf ‘cage’ idea in the post of 10 June but check out this guy and his ‘cage’ with grass only: