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it grows to about 1m tall and has no flowers.
It always comes up in my garden this time of year.
Triffid, kill it with fire.
Yeah it's a cross breed between Japanese knotweed and giant hog weed. Created by Victorian gardeners to screen off the estate houses with a quick growing, toxic hedge that's near impossible to eradicate. Honestly just torch the lot and fast. It can be quite limited in growth for a few years but by **** when it grows it grows.
I reckon , well Google lens ...
Conringia orientalis
If you hear a tapping noise definitely walk away. Fast.
If you hear a tapping noise definitely walk away. Fast.
Should be safe - it's past triffid season
I have some questions,
Do you farm cows?
Do you have a son called Jack?
Bruce’s (botanically obsessed) other half here…
The previous suggestion of Conringia orientalis (Hare’s-ear Mustard) is not one that I am familiar with, so I searched for pictures. Here is a link to Conringia orientalis (Hare’s-ear Mustard) and it does look similar to your plant, but I don’t think that is what it is. https://www.fredswildflowers.com/conringia.html
I think that it is Bupleurum rotundifolium (Throw-wax). Here is a link to photos of early season growth of Bupleurum rotundifolium (Throw-wax). https://www.naturespot.org.uk/species/thorow-wax
I have only ever seen this once and it was in late summer and the leaves look quite different later in the season. This species occurs as a bird-seed alien sometimes.
The differences are between the two at this stage in the season are quite subtle and may bore the bum off anyone who is not into botany (a lot), so sorry if you didn’t want to know all this but here is why I think it is Bupleurum rotundifolium rather than Conringia orientalis:
1. Your plant has thinner looking and leaves than Conringia orientalis and if you look carefully at the leaf veins you will see that the two species are subtly different and yours matches Bupleurum.
2. The basal (lower) leaves of Conringia orientalis have an apiculus (a tiny point a bit like a small tooth) at the end of the leaf. In your photo, the third leaf from the bottom on the right-side shows this if you zoom in.
3. The arrangement of the leaves around the stem is different in the two species. In Conringia orientalis the leaves are arranged on opposite side of the stem (not opposite each other though). This gives the plant a “two-ranked”, two-dimensional appearance as the leaves are arranged in more or less in one plane. In Conringia orientalis the leaves are arranged in a spiral arrangement around the stem and this gives the plant a different look.
This is my opinion based on looking carefully at your picture and keying the plant out in a vegetative plants key and comparing pictures on the internet. For any of you who are equally botanically obsessed I have used the Vegetative Key second Ed. By John Poland (both species key out in section JS).
As I mentioned before these are not plants that I know well at all and I am happy for anyone with more knowledge of these species to agree / disagree. Either way it was fun figuring this one out.