Posted in Allotment, nature

Build it and They Will Come

August disappeared quickly and September is zooming by, even the Autumn equinox has been and gone. Apart from the heatwave a few weeks ago (with the highest temperatures of the year being reached) it is beginning to feel autumnal. Fungi has appeared, leaves have started turning, plus nights are drawing in and cooler misty mornings have returned highlighting once hidden spiders and their cobwebs.

Foraging blackberries had begun early this year but the extreme heat meant that the remaining flowers and berries dried up; the same is true of elderberries, although sloes, haws, rosehips and rowan berries are abundant. Unlike last year, apple and pear trees, that I see regularly, have struggled with the weather this year as well. Thankfully harvesting on the allotment is still going strong; potatoes, kale, beetroot, radishes, chillies, courgettes and rhubarb have been keeping us fed. The popping corn will soon be ready too. I have also been harvesting calendula, lavender and other herbs recently.

There has been a few changes on my plot. I had finally collected enough items to be able to construct ‘the bug snug’. 

It is an addition to the wildlife section containing wildflowers and long grass (which also links to a pond on the adjoining plot). I know we have a couple of frogs visiting us so hopefully it encourages more to inhabit our allotment (to help keep slug and snail population down). I still hear the grasshopper when we are nearby too. There has also been evidence of a fox visitor; random toys get left near the water I leave out, along with poo on the grassy paths between plots.

Last week I also noticed that the Bee house, at the opposite end of the plot, was finally being used.

I found it hard to contain my excitement as it has been there for a few years and I was beginning to think it would never be used. There is evidence that it has been used by a Leaf-cutter bee and Mason bees too. Although it is difficult to know which ones specifically, the most commonly found in gardens are the Patchwork leaf-cutter bees (Megachile centuncularis) and Red mason bees (Osmia bicornis). As the name suggests Leaf-cutter bees used leaf particles to plug one piece of bamboo while those used by the Mason bees were plugged with soil. Each cell contains larvae as well as some pollen and nectar for the developing young. Male bees fly out before the females as they are near the entrance. The developing bees will remain there over winter and emerge as adults next spring, at the around April.

In other news… While clearing a gravel footpath of wildflowers at work, I accidentally disturbed a Devil’s coach-horse beetle (Staphylinus olens). I stopped weeding that section to enable it to hide for the rest of the day.

Devil’s coach-horse beetle

These beetles can raise their abdomens (resembling a scorpion), release an odour and even bite when they need to defend themselves (thankfully it didn’t feel threatened by my presence). They grow up to 2cms 8mm in length and are commonly found in gardens from April till October (when accidentally disturbed as they are active at night). The young overwinter in the soil as pupae until the following spring when they emerge as adults. The adults can fly but usually quickly run away from danger or to catch prey eating larvae, insects, spiders and slugs.

The Big butterfly count results came out this month. The long term trend of many species of butterfly and daytime flying moths recorded continue to fall, although the numbers were the highest since 2022 (with an average of 12 butterflies being spotted compared to 9 back then). The most commonly recorded were Red admiral (Vanessa atalanta), Gatekeeper (Pyronia tithonus), Small and Large whites (Pieris rapae and Pieris brassicae) as well as Holly blue (Celastrina argiolus). While those which are in significant decline are Ringlet (Aphantopus hyperantus), Common blue (Polyommatus icarus) and Speckled wood (Pararge aegeria). Over the last few days I have seen several Red admirals and even one Speckled wood making the most of the Autumn sun.

Upon visiting the Chiltern Open Air museum on the last bank holiday weekend, we walked through the meadow and woodland that is there. In the woodland, a couple of Silver-washed fritillary (Argynnis paphia) butterflies fluttered in amongst the brambles (the flowers of which give nectar for these fritillaries along with thistle blooms.

Silver-washed Fritillary

There were lots of Dog violets (Viola riviniana) on the woodland floor too, which is the food source for their caterpillars. The wingspan of this butterfly is between 7.2cms and 7cms 6mm. They are found in most areas of the UK (apart from Scotland) and often in oak woodland.

The meadow was full of wildflowers, but it was particularly lovely to see
Harebell (Campanula rotundifolia) and Wild basil (Clinopodium vulgare) amongst them.

Harebell

The delicate looking Harebells bloom from late summer into autumn. They can be used as an indicator of dry nutrient poor chalky limestone soil which they require to thrive. Along with dry undisturbed grassland and heathland Harebells will flower in walls, cliffs and even on sand dunes.

Wild basil

Wild basil is a mound forming perennial which also likes the same soil conditions as the Harebell. This wildflower can be seen blooming in July, August and September.

It was lovely to see Tansy (Tanacetum vulgare) growing in the wild too; found in a few areas including near the iron age roundhouse located on the museum grounds.

Tansy

It starts flowering in July through to October. While used as an insect repellent to keep ants and flies away, some insects, especially the Tansy beetle (Chrysolina graminis) are resistant to the toxins produced by the plant. Tansy beetles are endangered in the UK; only found in two places in York along the River Ouse and in Cambridgeshire at the Woodwalton Fen nature reserve. We are at risk of losing this once common beetle due to habitat loss (wetlands), where their entire lifecycle occurs, and loss of suitable food source (mainly Tansy); however in the Fens its been seen eating Water mint (Mentha aquatica) and Gypsywort (Lycopus europaeus) too. It’s conservation status is known to be Nationally Scarce and is a
UK BAP priority species that is
Protected in the UK under the Wildlife and Countryside Act, 1981.  More can be found on this beautiful beetle on the Buglife website (see web pages below), including how to help with its conservation.

The Tansy beetle

Tansy beetle conservation