I agree with Fiona about the Ficus - they have shocking root systems and should never be used near pools, houses etc. The width of your retaining wall from the photo looks really narrow, so you are going to have trouble growing most things in there; even the Pittosporums will eventually cause structural damage to the walls. The width of any garden bed should be ideally 1.5 metres at least for proper root establishment. This seems to be hard for most people to understand, but the bigger the plant, the wider the root system. So either widen the retaining wall or you will need to keep the plant lower. The pears mentioned also will never work. 5 years is the testing time of a good garden. When first planted they can look great, but they often break down as they grow. The Ficus and Pears' root systems will keep on expanding after the 5 year period with the Ficus having surface roots that cause massive damage to paving, concrete etc. Google it! And I have seen first hand the damage done by another Landscaper's work, based on inexperience. Get professional advice if in doubt - it is worth it if you get a good one. Alison

Replace the front door and joining window with a set of double doors - either solid oak or just classic glossy black. They will add value to your home, personality and will make life easier when it comes to moving in or out large sized pieces of furniture that can be a headache if you tried to fit through a single door. The path to the front door can either be painted a colour of your own choice or even paved, while I would also add a border of either pebbles or flowers (e.g. Lavender, Geraniums, Agapanthus, what ever suits your fancy ) down the right hand side of the path to add colour and a visual aspect to your front yard. Make sure your whole front yard looks neat, clean and tidy. If possible, employ the services of a landscape artist. Though highly expensive, he or she may give some quality advice in how to capitalise on your existing garden.

Hi Roger, With the pleached trees, I think your underplanting amps up the tropical look especially if you go with a magnolia that have the dark green upper leave and the bronze underside. You could just go for banana or palms - personally I think you might be right about the clumping bamboo becoming a bit dense. Regarding your 400mm retaining wall - citrus are shallow rooted and tend to have a root system that goes out to their drip line. Maybe if you put it in a corner you can use the corner to espalier it in conjunction with staking it to get upper stablility but I'm not sure how it'd go with the roots - but give it a go at $30-50 depending upon size it's not an huge amount if it doesn't do well - just dig it up (just watch the thorns) and give it to a friend - check out Daileys for varieties and maybe get in touch and see what they think, they might do them on a dwarf root stock - I've found them to be helpful in the past. i'd be reluctant to underplant any kind of citrus though - as they are shallow feeders.

horizontal anything is a no, the gap would have to be so small it might as well be solid. yes the vertical cable might pass but you are not allowed to be able to squeeze them together as then the gap distance is non complying, The safest one is the solid section PCA pool fence, or glass, or solid, to 1200 mm in Queensland, no greater than 100 mm off ground, and gaps not able to be manipulated, and to stop that you have to have horizontal section in the cable type, which then do not comply, cut metal screens if complying is OK. I would question the void, and if you know the reason for the void, than solutions will be able to be worked out, now we are asking why? Pools in adjoining yards are acceptable with pool fencing complying on both sides, no void is required. so the void sound a bit iffy, unless it is something to do with storm water, or a building requirement, so ask the question why. Pool fencing can be awesome.