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BobTheGardener


Latest posts by BobTheGardener

Massive whitefly problem in border garden

Posted: 16/04/2015 at 02:15

The only thing which will likely work in the way you want is to introduce a whitefly-specific predator.  Encarsia formosa is a tiny wasp which will prey on them.  Eretmocerus Eremicus is another similar wasp.  You may need to try both.

Most of the common predators such as lacewings, ladybirds and hoverflies predate on aphids, not whitefly and will ignore them.

The whitefly predators are only effective when it is warm enough and are normally used in greenhouses as that is where most whitefly infestations occur.  As you are in Brighton there is a good chance that these will work outside in a few weeks time when night-time temperatures are higher and more stable, especially if your garden is sheltered.  There are several online suppliers.

Summer Raspberries.

Posted: 14/04/2015 at 23:09

Tom, a great rule of thumb is that any hardy pot-grown plant can be planted at any time of the year as long as the ground isn't frozen or waterlogged.  With raspberries, dig in some well-rotted manure or compost to the planting area and regularly water them for the next few months.  Give them a top-dressing of well-rotted manure or compost in winter or very early spring every year.  Next year you should get a decent crop and they will likely become prolific in following years!

Unidentified seedlings

Posted: 14/04/2015 at 22:45

Dierama?

My azalea has gone bananas

Posted: 14/04/2015 at 22:41

I bought 3 azaleas and one of them turned out to be 2 separate plants growing right next to each other so if it's not a grafted one with the rootstock also flowering, that is another possibility.  It's a pity the base of the stem is obscured by that shoot - could you rotate the pot and take another photo Judith?  It does sound like the rootstock is flowering though.  If that's the case you need to keep an eye on it as the rootstock may be a stronger grower (which is why it was used) and could take over at the expense of the white one.

Anyone done any gardening today?

Posted: 12/04/2015 at 22:56

Cold and very windy today but planted 96 onion sets which were started in modules in the GH to prevent birds pulling them out.  Also got another 2 rows of broad bean plants in just before the rain started.  Then sheltered in the potting shed and pricked-out a couple of dozen dahlia seedings and 6 Japanese quince seedlings grown from a fruit I left on the mother plant all winter. 

What on earth is this weed??

Posted: 12/04/2015 at 20:31

It's not celandine as that has small leaves, less than an inch.  Judging by the ivy leaves at the base of that large shrub, the leaves in question are 3-4 times the size of those, so several inches across.

 

 

What on earth is this weed??

Posted: 12/04/2015 at 12:18

If the flowers were purple, it could be winter heliotrope:

http://www.ukwildflowers.com/Web_pages/petasites_fragrans_winter_heliotrope.htm

 

Dealing with garden waste

Posted: 11/04/2015 at 19:43

I also use a shredder and compost everything.  Once shredded, it's surprising how much the volume is reduced and if you mix it properly (20% soft green stuff like grass cuttings to 80% dry or woody material), it will compost down to a 1/4 of the shredded volume in as little as 2-3 months.  The compost is then spread on my borders as a mulch.  After doing this for many years my original clay soil is now wonderful stuff!

Harvest Mites

Posted: 11/04/2015 at 11:51

I use a free photoviewer called Irfanview nut.  Open that first then right-click the image and choose copy, then paste it into Irfanview.  You can then zoom into any part of a photo:

http://s4.gardenersworld.com/uploads/images/original/72568.jpg?width=299&height=350&mode=max

 

 

Harvest Mites

Posted: 11/04/2015 at 11:40

Well, I can see 8 legs, so it's definitely a mite of some kind but I've been unable to identify it.  Are you in the UK, TC or elsewhere?

Discussions started by BobTheGardener

Drought

No real rain here for weeks 
Replies: 11    Views: 230
Last Post: 07/06/2015 at 18:41

Little Red Devils (Lily beetles)

They're about now! 
Replies: 1    Views: 257
Last Post: 06/04/2015 at 17:03

Christmas has come early

New trees 
Replies: 9    Views: 868
Last Post: 19/12/2014 at 16:52

Anyone for squirrel crumble?

Thieving rodents 
Replies: 12    Views: 657
Last Post: 27/11/2014 at 21:12

Plant ID quizzes

Have fun identifying plants! 
Replies: 16    Views: 610
Last Post: 14/09/2014 at 13:17

Watering dried-out pots

Tip to help to stop water running straight through 
Replies: 13    Views: 572
Last Post: 28/07/2014 at 12:28

Blackfly - ladybirds to the rescue!

Broad bean tip blackfly infestation 
Replies: 2    Views: 446
Last Post: 13/07/2014 at 18:04

Bob's guide to picking soft fruit

Only fto be read by your household's main gardener! 
Replies: 3    Views: 384
Last Post: 05/07/2014 at 18:52

Lovely surprise

I went down the garden in the gloom.. 
Replies: 15    Views: 692
Last Post: 18/06/2014 at 14:32

Dragonfly/Darter/Mayfly ID?

Flew into the polytunnel for a while 
Replies: 6    Views: 613
Last Post: 01/06/2014 at 21:44

A week of rain = jungle garden!

It's been too wet to really do anything outside.. 
Replies: 16    Views: 1076
Last Post: 01/06/2014 at 17:42

Deep Down & Dirty: The Science of soil

Replies: 4    Views: 693
Last Post: 24/04/2014 at 11:30

Check your delphiniums for caterpillars

Look for distorted and damaged leaves near the tips 
Replies: 10    Views: 1055
Last Post: 22/04/2014 at 10:58

Seed grown Wisteria finally in flower - Hooray!

Planted many years ago 
Replies: 3    Views: 420
Last Post: 15/04/2014 at 12:39

Oops!

Polytunnel growing 
Replies: 16    Views: 751
Last Post: 16/04/2014 at 19:05
1 to 15 of 28 threads