Ruud Kleinpaste: Summer things in the garden

Yes, I realise it won’t be summer for another week or so, but the following observations are just a few Gardeners’ Tips to muck around with:  Ancistrocerus gazella is an introduced “potters wasp” from Europe. It got here decades ago and is a really cute predatory wasp that does some great things in your quarter acre paradise. This little wasplet makes nice nests inside hollow tubes and then it goes on the hunt for small caterpillars, usually the leafrollers that silk your leaves together and chew from within their leaf-silk tent.  Ancistrocerus paralyses the caterpillars, lays an egg on them and cements the quarry and its own potential baby inside the carefully chosen tube. Of course, the caterpillar will become food for the ectoparasite, and this helps to reduce the chewing damage on your roses, perennials and other plants.  Here’s a tip: create a bunch of small-diameter bamboo tubes as a choice of real estate for these wasps to live in. The accommodation runs a little bit like that of the mason wasp (who gets their kids —larvae— to feed on paralysed spiders).  Frustrated Cucurbit growers (cucumbers, melons, marrow, courgettes, you name it) often complain at this time of the year that their plants simply don’t set fruit at all; in fact, the plant almost exclusively produces male flowers and hardly any female flowers!  Yep, common complaint. If there is a scarcity of pollinators the plant “thinks” there isn’t enough pollen/there are not enough pollinators to fertilise the female flowers, so it creates more male flowers to “compensate”.  A remedy that works toward solving the problem is to have a lot of Pollen and Nectar plants surrounding the cucumber/melon, etc, so that a heap of pollinating insects are constantly patrolling the area. The first female flower will then almost certainly get her turn, and the plant “knows” it’s okay to produce more female flowers.  If you can achieve that from mid-spring onwards, all will be well!  Talking about pollinators, have a look out for the Wool Carder Bee! It’s another introduced pollinating insect from Europe, and it has some quite amazing behaviours.  It loves to hover and fly around the Lamiate flowers in your garden, stuff like Salvias, and lamb’s ear. These types of plants are its favourite food, and it defends its patch fiercely by chasing away other pollinators – bees, bumble bees, and even wasps! It does so by dive-bombing these “interlopers” with almost Top Gun-like sorties. They will even squeeze bees and bumble bees between their abdominal segments, festooned with spikes! Gruesome stuff, especially when then mortally wound these bees.  When wool carder bees start nest building, they scrape off the fine, light-coloured hairs off the leaves of certain plants (remember lamb’s ear!) and work these fibres into the most delicate, soft and insulating ball that acts as nest nurseries for their larvae and pupae in development.  Their name (wool carder bee) tells the story of their ability to cut off the hairs and fibres and use those resources to create brilliantly designed nests for their babies.  When you point all this activity out to the kids, you’ll find they will be busy observing aerial battles and dogfights, right in your back yard! I think it’s worth-while to plant some lamb’s ear, just for the entertainment value alone.  LISTEN ABOVE  See omnystudio.com/listener for privacy information.