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04/05/2013 at 11:24

I overwintered my dahlia tubers in the garage - I planted them in compost around mid March (same time as Monty Don).  On GW last week he took cuttings from his ones but mine have not done anything at all.  Nothing is coming through at all

Does anyone know what could be the problem and any tips on what to do next ?

04/05/2013 at 11:57

Mine didnt spring back to life either after overwintering and then potting up for a month  I've just planted mine in the garden and can see a shoot starting to appear (fingers crossed!)

04/05/2013 at 12:19

Monty has a heated greenhouse and probably popped his on a heated bench, all of mine are a couple of inches tall, they are mexican plants.

04/05/2013 at 12:54

I over wintered mine in the loft and planted in compost same time as Monty.  I put them out in my unheated greenhouse beginning of April and still have them in there just now.  The greenhouse had been insulated with bubble wrap which helps a lot. Some are about 12ins high and some smaller but about three or four still not showing signs of growth.  Living in Scotland I am very pleased with percentage saved over winter.  I have about 33 in total but I won't be planting in border until nearing end of month when all chance of frost has gone. I would persevere as it is still early days yet and it all depends on temperature. Once the weather turns warmer you may find a difference. Good luck.

04/05/2013 at 13:26

Thanks everyone, yes will persevere as you say and keep hoping for signs of life. 

04/05/2013 at 13:50

How deep in the pot did you plant the tubers, have you been keeping them damp and are the tubers solid?

04/05/2013 at 14:03

I've found a guaranteed way to get something to grow is to buy a replacement - it will then grow and you will have twice as many as you needed 

04/05/2013 at 15:21
Dovefromabove wrote (see)

I've found a guaranteed way to get something to grow is to buy a replacement - it will then grow and you will have twice as many as you needed 

 

I like the style!

04/05/2013 at 15:32

Only the other day I was  looking online for sellers of Boskoop Glory and today mine has sprung into action 

04/05/2013 at 16:59

Hi Blairs  I planted them a couple of inches deep - is that deep enough or too deep?  I have been keeping them just damp and yes the tubers are solid. 

04/05/2013 at 21:37

There is no doubt that without the benefit of artificial heat  all dahlias are a bit slow to get started this year ( a bit like me). However I now have a couple that are showing signs of life in their pots. 

Dahlias get going when they feel ready and not before... I don't think it matters when you actually pot them on since if it is cold it doesn't matter if they are potted up, or still waiting in their box or packet. This year they will be a little late. However the current warmer weather should make all the difference.

clk
06/05/2013 at 21:42

In an unheated greenhouse my dahlias are just showing new growth now, so I would definitely persevere. After taking them out of storage I left them to soak in a bucket of water for 24 hours (they seemed a bit dry) and then put them in shallow seed trays of compost and into the greenhouse, keeping them moist. It took a while for them to do anything. Whether or not they will flower is another thing!

clk
06/05/2013 at 21:46

Mine went rotten and are now on the compost heap. Along with their cardboard box

07/05/2013 at 03:41

Left mine in the terra firma for the second year running, no sign yet, as expected though...

Being a pessimist, i'm always pleased with the outcome 

07/05/2013 at 19:03

I always keep the 'eyes' of the dahlia at almost soil level. It does help with waking the stalks up. Too deep and you risk them not waking, in my experience, at very least it slows them down for weeks.

09/05/2013 at 15:37

Poor year for me too with dahlias. I kept about 50 tubers last year they seemed fine after winter but rotted quickly when potted up. I think it just has been too cold. Only 12 have come back to life. Bishop variety has done the best and i have even split some of the tubers when they sprouted. some of the large cactus ones have come through but i lost all the dwarf bedding type. I also think they rather a dry heat. I initially started heating greenhouse with a parafin heater but it caused condensation. Switched to electric fan type and all my plants seem healthier. I always plant tubers with a bit of the top of the tuber showing above compost. i find if they are totally buried they rot easier. 

09/05/2013 at 22:22

I planted a couple of dahlia bulbs I bought in Lidl about a month ago and can't see any sign of them. I planted them when the cold weather ended. I've seen other bulbs and shoots appear, especially in light of the warm, sunny weather of the last week or so.

Are these something that needs to be planted in pots and kept in greenhouses at first? I just put them into the soil.

10/05/2013 at 17:04

I had only 50% success this yr with some new, small tubers bought in. They werent expensive, so not too unhappy really.....

The big ones that I grow in pots from one yr to the next, including chocolate cosmos, are all over wintered in their wrapped pots & covered with fleece 'hats' in an unheated part-glazed porch that can be cold, but frost free.

I did end up tipping the non-starters out of their pots, & checking things out. Yes, still solid tubers with growing points, but nope, just didnt want to get going, despite the warm sunny windowsill.

Tomsk wrote (see)

I planted a couple of dahlia bulbs I bought in Lidl about a month ago and can't see any sign of them. I planted them when the cold weather ended. I've seen other bulbs and shoots appear, especially in light of the warm, sunny weather of the last week or so.

Are these something that needs to be planted in pots and kept in greenhouses at first? I just put them into the soil.

Chances are Tomsk that they're too cold still. They may have survived, but I'd check them out, very carefully, to see if any signs of life. IME They need to be started off inside, with some heat- windowsill in my case- & not put out/planted out until after the risk of the last frost for your area. J.

 

17/05/2013 at 20:36

they need plenty of warmth and light to sprout. prehaps put them in a pot and place on sunny windowsill for a week or so 

18/05/2013 at 12:58

Both have suddenly sprouted into life.  Just shows a little patience................

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