Robert's  Geranium (Geranium robertianum) is an introduced herbaceous weed.  It is probably best known for its bright pink flowers and distinctly unpleasant smell if the foliage is crushed or bruised  (earning it another common name, "Stinky Bob").  It is rumoured to be edible and has been used for a variety of medicinal uses, although at least one website cautions that there has been very little testing of side effects.  It is one of the few non-native plants which can invade shady forests and I have seen it moving into some of the older forests on southern Vancouver Island. 
Geranium is greek for "little crane's bill", in reference to the shape of the fruit. 

Bur Chervil (Anthriscus caucalis) is an introduced  weed, similar to the garden herb,  It is an aggressive colonizer in the meadow.  It is a handsome plant, with fine, fern-like foliage with a strong smell when bruised or cut.  The flowers are small and white.   The plants here show an amazing diversity of sizes, from just a few inches high on  trampled or  drier sites with thin soils to robust plants over a meter high on moister, deeper soils.  For the most part it seems to behave as a biennial here, forming a basal rosette the first year and flowering in the spring of the second year.  

English Daisy (Bellis perennis) is a widespread exotic weed most commonly seen in lawns and other disturbed areas.  There is can form impressive sweeps of white or pale pink in the early spring when it blooms.  This is yet another weed that can be used in salads, although the leaves are best used when young, they become bitter as the plant ages.  The word "daisy" is thought to come from the words "day's eye" in reference to the habit of this plant opening the flower in daylight and closing up again on cloudy days, or at night.

British Columbia has 5 species of Taraxacum, and this one, Taraxacum officinale is the commonest.  Of the five, two are introduced and three are native.  Here the main bloom of the species is late April or May, depending on the year, but flowers can pop out at  any time, including warm spells in the winter.  Dandelion is as well known for their seed heads as they are for their flowers and the parachuting seeds are amazing to watch on a windy day as the float soar away to disperse the seeds.  The name is from the French "dent de lion" in reference to the jagged tooth leaves.

This large introduced slug is a familiar site for anyone that spends time outdoors on southern Vancouver Island.  The species is introduced from Europe and can be a major garden pest.  For many years we had very few of these at Leaning Oaks, but in the spring of 2013 the numbers increased greatly and the density of this species in the meadow and the garden was amazing.   There are a number of common names used for this species, and Chocolate Arion undoubtedly refers to a brown morph of this species.  Reddish colour forms (hence the Latin name Arion rufus) also exist but the commonest colour we see here is the jet black "Licorice Slug".

A. You are doing what for species a day??
B. You heard me, the daffodils. 
A. But is that in the spirit of this exercise?
B. They have naturalized in the meadow, haven't they?
A. Yes....but...just along the edge! And someone planted them. 
B. But we didn't; and besides that, did we plant the daphne or Himalayan blackberry or any of the other invasives that have been included here? Have we?
A. No. But these are different.
B. Why?
A. We haven't pulled them out.
B. Huh?
A. I suppose they aren't just at the edge....
B. I am doing Narcissus pseudonarcissus 
A. Okay

Bulbous Bluegrass (Poa bulbosa ssp. vivipara) is an introduced grass that grows in disturbed areas and dry places.  Its a very distinctive grass because, instead of producing flowers and seeds like grasses usually do, the inflorence produce small bulbs which start to grow on the flowering head.  As the summer approaches, this grass usually dries up, and the bulbs fall off and loose their leaves,  but are able to resprout with autumn rains.  
This species has had an interesting history.  First used in the west as an agricultural crop it was promoted as a weed control in alfalfa fields, where this grass could outcompete other species.  Now it in itself is regarded as a weed in some parts of western North America. 

This is a recent arrival in B.C., with the first record from the province in 2003.  Polistes dominula ( P. dominculus) spread quickly and our first record here at Leaning Oaks occurred in 2005.  This species looks superficially like our native Paper Wasps and Yellow Jackets, but they are thinner-waisted and fly with their back legs dangling, which gives them a distinctive appearance.  The make paper nests, but these lack the familar outer envelope of our Paper Wasps and Bald-faced Hornets.  Instead the honeycomb shaped paper cells are plainly visible and guarded by attendant wasps.  Biologically this is a fascinating species, with a lek breeding system, multiple founders at a colony,  worker specialisation and swarming behaviour in the fall.  The numerical increase and speed of spread is a bit alarming, and they can be at very high densities.  They feed heavily on insects, especially caterpillars and the effect of this new species on our local ecosystems is not known.  Nests are usually placed 1-2 meters above ground, often near or on human build structures.  We have seen them on cedar-rail fences, in the brackets that hold our hot tub cover, mailboxes, under picnic tables, inside bird houses, in wood bins and under deck railings.  
The paper describing the discovery of this species  in B.C. can be found here:  http://journal.entsocbc.ca/index.php/journal/article/view/82

Purple Dead-Nettle is a distinctive introduced species that is frequently found in disturbed places and lawns on southern Vancouver Island.  At Leaning Oaks it varies from year to year how much of this we have, and it is a common weed in our garden.     The purple leaves on the flowering shoots are showier than the flowers themselves, and nearly the same colour.  Lamium purpureum var. 
purpureum  is in the same genus as Yellow Archangel (32.) and since both are weeds here,  I must admit that its has discouraged me from using other species of Lamium in the garden.  This species is usually an annual or biennial plant.   They produce huge quantities of small seeds, in the hundreds or thousands.  Irrigated, they continue to bloom well into the summer or fall. "Dead"-nettle refers to the fact that the species superficially looks like stinging nettle, but is "dead" or stingless.

Hairy Bittercress (Cardamine hirsutum) is a non-native winter annual that grows in our Garry Oak meadow, along paths and in the garden.  It flowers very early and by the first truly warm days of spring it is starting to form silicles (the seed pods) and is getting ready flick it seeds  at the slightest touch.   It can be an abundant winter weed in the garden.  For a few tricks on controlling this pest see Dave's garden blog: http://gardennotesfromleaningoaks.blogspot.ca/