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11 messages
22/09/2013 at 17:16

I have a small city garden, we have decking and trellis so all my plants are in pots.  We've been here for just over a year, so the majority of the plants are only this old.  Through the summer, I'll admit I did put the plants under pressure as they dried out a fair amount of times as I forgot to water them!

I'm having problems with the following plants:

-Mint - a cutting from my mother-in-law, which was healthy and normal when it came to me, and is now speckled white

-Honeysuckle - growing well, but the leaves are all falling off the older part of the plant, is this normal?  The leaves are also covered in a white coating, it looks like limescale!

-My scabious is also covered in white, it did very well through the summer, despite being infested with aphids, mostly brown ones.  I tried natural control with ladybirds I bought online, it didn't really help!

-Pot buddleia leaves are being eaten by something, it's done ok through summer, flowered, but now the leaves are holey.

-Dicentra leaves are yellow and also being eaten by something, (no picture of these sorry but picture of ?larvae found when pruning)

Sorry for multiple problems in one post but they may be linked?

I also found caterpillars/larvae when cutting back the buddleia and dicentra.

I can't seem to attach photos from my computer, via the option when posting this, any advice for this?

Thank you in advance for any help/tips!

22/09/2013 at 18:15

Well where to start! It is that time of year when things start to think about dying back and thats most likely why they are looking poorly or pot plants need to be kept watered and deadheading.Things eating your buddlia are the offspring of the butterflies you have been watching dont worry to much its time for things to go into winter mode .

22/09/2013 at 18:20

the white stuff is mildew and all the plants you mention are susceptible. you can cut back the mint and scabious and if the honeysuckle is deciduous the leaves will drop off. As flowering rose says, it's that time of year

22/09/2013 at 18:55

Yes plants are in process of dying back, etc.  I would soon gather up fallen leaves, etc. and generally go on a hygiene spree.  Won't affect next year's plants.  Your honeysuckle is prob suffering from mildew.....dryness is a cause.  So good mulch should help with that one.  ( homeysuckles have suffered widely this year in the got dry weather)

23/09/2013 at 09:02

poedery mildew, due to drying out/ eratic watering.

where did you spot the larve in the dicentra pot nd what do they look like? some are worse than others.

23/09/2013 at 09:28

I would suggest cutting down the Dicentra now. I did mine a few weeks ago. It will build up its root system for next spring.

The white stuff is Powdery Mildew as the others said above.

My honeysuckle and Dahlias have suffered from it this year, just collect any fallen leaves and dispose of them.

24/09/2013 at 21:09

Most mildews this year have been causes by hot dry weather.  Most,people seem to think they are the result of dampness.  More moisture and most of those mildews will disappear.  Solution in the growing season is to cut off all foliage and water well

06/10/2013 at 20:41

Thanks to everyone for the advice!

07/10/2013 at 14:16

Oh, that mint Louise.  Is it in a pot or in the garden?  Best not to,have if in the garden....it will romp.  Pull mint apart now and pot up.  Keep in greenhouse and water well. You should have new fresh mint growing in the next few weeks

07/10/2013 at 14:58

As all your plants are in pots they are entirely dependent on your for food and water.  In summer, most pots need watering every day to keep the compost from drying out and stressing the plants.

Stressed plants succumb to disease and pests.   Happy, well fed and watered plants fight them off.  Water them well now, soaking them in a bucket if you can until no more bubbles appear, and then keep them watered till they go dormant.  Stand them on pot feet or bricks for the winter so they don't sit in a puddle.

The white stuff is mildew and, as stated above happens to stressed plants.   Mint likes moisture and shade form midday sun.   Dicentra does tend to die back earlier than many plants.   Honeysuckle and buddleia can be cut back next spring as new growth starts and then will need a good feed of slow release food to last them for a few months plus regular weekly liquid feeds of rose or tomato feed to keep them growing and flowering well.

Bin or burn any affected foliage you remove.  Do not compost it.

07/10/2013 at 15:45

Hi Louise, re photos, I find they dont always download straight away on this site, you need to try it about 3 times (dont know why, probably a bit buggy!)]

Another tip, come the spring, top dress all your pots with a good layer of fresh compost to give the plants a boost. Good luck

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