Questions for March 2008

Question

I bought a Grevillea plant today the guy at the garden centre just said it grows to about 3 feet and flowers until June I have since found there are many types mine has pink and black flowers on pine like branches what is the general rule of where to plant type of soil etc any tips welcomed thank you

Answer

It seems to be quite tender and prefers a light, sandy soil. Plant it out in a sunny, sheltered spot and perhaps protect it when the weather is severe. You shouldn’t need to prune it unless you want to keep it to a certain size or shape, if you do wish to prune it do it once flowering has finished.

Question

I want to replace my Acer in the garden. Is it ok to plant a new one in the same place as the one I am now digging out?

Answer

As long as the Acer you are replacing is healthy then I can see no reason why planting another would cause problems. Ensure you remove all the roots of the old tree and dig a hole twice the size of the root ball of the new tree. Add lots of well rotted compost to the soil when back-filling. Water if it doesn’t rain but ensure it doesn’t get waterlogged.

Question

I have a wisteria tree which is well established (over 25 years); it is situated in my front garden and has been trained to grow over an archway and along the side of my garage. We have invested in a larger vehicle and as a result need to widen our driveway area which impinges on where the wisteria trunk is sited. As we will be digging up this area to lay a new driveway and paving area, rather than lose the wisteria, we wondered whether once the roots are exposed whether it would be possible to re-site the trunk a few metres away and re-bed in the new paving without causing damage to the tree.

Answer

I am not confident that you will be able to easily re-site your wisteria.  As a rule a tree’s roots spread the same distance underground as their branches do above ground so I would doubt that you would be able to remove all the roots without damaging them and therefore risking the tree. Having said that it sounds as if you have to remove the tree anyway so it may be worth the risk. If you decide to go ahead you should dig a hole in the new location before you begin removing the tree. Make sure the hole is wide enough and deep enough to contain all the roots and add lots of well rotted compost to give it as much help as possible. You may need to detach some branches from the support wires prior to moving. Once you are ready, carefully expose as much root as you can and only cut off roots if absolutely necessary. The most important roots are the smaller fibrous roots which take up the goodness in the soil, the bigger roots are there to hold the tree in place and seek out water further below the surface. Before laying the new paving give the tree lots of water each day for as long as you can to help it establish. If it does happen to die off you could always use it as support for another climber such as a clematis or honeysuckle.

Question

I bought a Cistus snow white yesterday and planted it by the instructions on the plant card however when I looked on the Internet it says not to use organic compost not to mulch and not to feed I used multi purpose compost give it a feed with miracle grow all of which the plant card suggested will it harm it or should I dig it up.

Answer

Cistus plants are originally from the dry, rocky soils of the Mediterranean, which means that they like poor, sandy soils so do not need fertile soil or fertilisers. I must admit that when I planted my first Cistus I also used compost and feed and it did OK. You may find it possibly won’t do as well as had you planted it in poor soil but as long as you don’t add any more mulch or feed then it will be OK in future years. However, if you have only just planted it, you should be able to dig it up quite easily if you prefer to replant. If you do just dig a hole and pop it in! The good news is that this plant copes with fairly extreme droughts so does not need much watering and loves strong sunlight. Also, this is one of the few Cistus plants that respond well to occasional pruning of its stems.

Related Articles

Cistus

Question:I bought a Cistus snow white yesterday and planted it by the instructions on the plant card however when I looked on the Internet it says not to use organic compost not to mulch and not to feed I used multi purpose compost give it a feed with miracle grow all of which the plant [...]

Wisteria

Question:I have a wisteria tree which is well established (over 25 years); it is situated in my front garden and has been trained to grow over an archway and along the side of my garage. We have invested in a larger vehicle and as a result need to widen our driveway area which impinges on [...]

Acer

Question:I want to replace my Acer in the garden. Is it ok to plant a new one in the same place as the one I am now digging out?Answer:As long as the Acer you are replacing is healthy then I can see no reason why planting another would cause problems. Ensure you remove all the [...]

Grevillea

Question:I bought a Grevillea plant today the guy at the garden centre just said it grows to about 3 feet and flowers until June I have since found there are many types mine has pink and black flowers on pine like branches what is the general rule of where to plant type of soil etc [...]