Comments on: Grevillea, How to grow. http://drought-tolerant-plants.com/grevillea/ Gardening Tough, Drought Tolerant Plants Wed, 18 Jan 2012 21:05:33 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: admin http://drought-tolerant-plants.com/grevillea/#comment-1006 admin Wed, 18 Jan 2012 21:05:33 +0000 http://drought-tolerant-plants.com/?p=582#comment-1006 My rule of thumb for pruning is after flowering. If in a frost prone area, never in autumn or winter. And if unsure how much to take off, never below green growth. If you want to find out if a particular plant can be pruned below the green growth (back to a stump or harshly) find a branch at the rear and experiment. Otherwise prune to shape or as desired. My rule of thumb for pruning is after flowering. If in a frost prone area, never in autumn or winter. And if unsure how much to take off, never below green growth. If you want to find out if a particular plant can be pruned below the green growth (back to a stump or harshly) find a branch at the rear and experiment. Otherwise prune to shape or as desired.

]]> By: admin http://drought-tolerant-plants.com/grevillea/#comment-1005 admin Wed, 18 Jan 2012 20:59:57 +0000 http://drought-tolerant-plants.com/?p=582#comment-1005 One way is to break the pot. I always root prune when I repot anyway. I soak the roots in seasol then root prune to remove. Then tidy up long roots that have coiled and then resoak in seasol. Just keep it protected afterwards until you're sure it's recovered. One way is to break the pot. I always root prune when I repot anyway. I soak the roots in seasol then root prune to remove. Then tidy up long roots that have coiled and then resoak in seasol. Just keep it protected afterwards until you’re sure it’s recovered.

]]> By: admin http://drought-tolerant-plants.com/grevillea/#comment-1003 admin Wed, 18 Jan 2012 20:54:01 +0000 http://drought-tolerant-plants.com/?p=582#comment-1003 Fetiliser would not be a good option. In fact it sounds like the problem might have been caused by fertiliser. Maybe the roots have just grown out to an area that was fertilised in the past? One way to counter phosphorus toxicity is too fertilise with a high nitrogen fertiliser but only if that's the problem. It may be getting too much water??? Is the soil boggy. Have you had a lot of rain lately? Fetiliser would not be a good option. In fact it sounds like the problem might have been caused by fertiliser. Maybe the roots have just grown out to an area that was fertilised in the past? One way to counter phosphorus toxicity is too fertilise with a high nitrogen fertiliser but only if that’s the problem. It may be getting too much water??? Is the soil boggy. Have you had a lot of rain lately?

]]> By: admin http://drought-tolerant-plants.com/grevillea/#comment-1001 admin Wed, 18 Jan 2012 20:40:59 +0000 http://drought-tolerant-plants.com/?p=582#comment-1001 I'm guessing they were both grown from cuttings? If so all things being equal they should flower at the same time. Therefore the conditions are definitely playing a part. Maybe there is a bit of fertiliser in the soil for one or maybe one gets more sun or water? I’m guessing they were both grown from cuttings? If so all things being equal they should flower at the same time. Therefore the conditions are definitely playing a part. Maybe there is a bit of fertiliser in the soil for one or maybe one gets more sun or water?

]]> By: admin http://drought-tolerant-plants.com/grevillea/#comment-995 admin Wed, 18 Jan 2012 20:17:22 +0000 http://drought-tolerant-plants.com/?p=582#comment-995 Different Grevilleas have a different tolerance to Phosphorus. Some are really sensitive while others are more tolerant. I never fertilse my natives when planted in the ground as I feel they don't need it. I only ever do it if they are in pots. One trick I've learned to counter phosphorus toxicity to fertilise the affected plant with a high nitrogen fertiliser. I've used Powerfeed in the past. Is you think it is fungus, it would be best to take a sample to a garden centre and get the opinion of a qualified horticulturist. Different Grevilleas have a different tolerance to Phosphorus. Some are really sensitive while others are more tolerant. I never fertilse my natives when planted in the ground as I feel they don’t need it. I only ever do it if they are in pots. One trick I’ve learned to counter phosphorus toxicity to fertilise the affected plant with a high nitrogen fertiliser. I’ve used Powerfeed in the past. Is you think it is fungus, it would be best to take a sample to a garden centre and get the opinion of a qualified horticulturist.

]]> By: Vickie Peto http://drought-tolerant-plants.com/grevillea/#comment-994 Vickie Peto Wed, 18 Jan 2012 18:47:20 +0000 http://drought-tolerant-plants.com/?p=582#comment-994 I have planted grevillea thelemanniana for the first time. It is on a slope with good drainage. Please provide the proper pruning for this plant. I have planted grevillea thelemanniana for the first time. It is on a slope with good drainage. Please provide the proper pruning for this plant.

]]> By: Julia http://drought-tolerant-plants.com/grevillea/#comment-992 Julia Wed, 18 Jan 2012 07:52:58 +0000 http://drought-tolerant-plants.com/?p=582#comment-992 Hi I have a one year old Molly in a pot. She has outgrown it very badly. Her roots are coming out the bottom. I have a slightly bigger pot to put her in. Should I wait till her current flowers bloom, prune before re planting? How can I get her out without damaging the roots? Thank you Hi
I have a one year old Molly in a pot. She has outgrown it very badly. Her roots are coming out the bottom. I have a slightly bigger pot to put her in. Should I wait till her current flowers bloom, prune before re planting?
How can I get her out without damaging the roots?
Thank you

]]> By: wendy crawford http://drought-tolerant-plants.com/grevillea/#comment-986 wendy crawford Mon, 16 Jan 2012 07:36:52 +0000 http://drought-tolerant-plants.com/?p=582#comment-986 I have a Grevillea (Honey Gem) approx.4years old which until last month appeared healthy and flowered normally. Within the last 2-3 weeks the tree no longer flowers and the leaves have turned brown and are now dropping. The effect is that one half of the tree looks ok and the other half looks as though it is dying. The leaves have never dropped to this extent before nor turned brown. Can you advise whether the tree is needing fertiliser or does it sound as if it is dying.Would it help if I pruned the tree quite heavily? I have a Grevillea (Honey Gem) approx.4years old which until last month appeared healthy and flowered normally. Within the last 2-3 weeks the tree no longer flowers and the leaves have turned brown and are now dropping. The effect is that one half of the tree looks ok and the other half looks as though it is dying. The leaves have never dropped to this extent before nor turned brown. Can you advise whether the tree is needing fertiliser or does it sound as if it is dying.Would it help if I pruned the tree quite heavily?

]]> By: Mary Morrison http://drought-tolerant-plants.com/grevillea/#comment-984 Mary Morrison Sun, 15 Jan 2012 08:58:25 +0000 http://drought-tolerant-plants.com/?p=582#comment-984 I planted two Grevilleas (Splendid) at opposite ends of the back garden. One is flowering profusely the other is growing like mad but has no flowers. Any suggestions? I planted two Grevilleas (Splendid) at opposite ends of the back garden. One is flowering profusely the other is growing like mad but has no flowers. Any suggestions?

]]> By: Katrina http://drought-tolerant-plants.com/grevillea/#comment-966 Katrina Fri, 06 Jan 2012 00:39:10 +0000 http://drought-tolerant-plants.com/?p=582#comment-966 Grevillea Rosmarinifolia I have a cluster of 3 grevillea rosmarinifolia plants which are looking rather unhealthy all of a sudden. A week or so before Christmas I spread some of the native fertiliser 'beads' around my front garden which is 99% natives, all of which have been growing beautifully for the past 3 years. Now the g. rosmarinifolias leaves are browning & they have black specks all over them. Is this due to the fertiliser? My row of grevillea orange marmalade trees have not been affected in the same way. Could it be a fungus? Can I do anything to save them - one in particular looks are tough it is going to die. Any advice would be appreciated! Grevillea Rosmarinifolia

I have a cluster of 3 grevillea rosmarinifolia plants which are looking rather unhealthy all of a sudden. A week or so before Christmas I spread some of the native fertiliser ‘beads’ around my front garden which is 99% natives, all of which have been growing beautifully for the past 3 years. Now the g. rosmarinifolias leaves are browning & they have black specks all over them. Is this due to the fertiliser? My row of grevillea orange marmalade trees have not been affected in the same way. Could it be a fungus? Can I do anything to save them – one in particular looks are tough it is going to die. Any advice would be appreciated!

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