Umbellifera seeds is a good try. My Giant Hogweed produces masses of seed just like yours. Seeds are still on the plants if you know where to look. (If you can convince me that your application is benign, I can point some out to you.). They might at this season be a bit blacked by mould.
But nb: from google:
"We rounded up some of the worst offenders, most of which are so damaging to the environment they're actually illegal to grow in the UK.
JAPANESE KNOTWEED. ...
GIANT HOGWEED. ...
HIMALYAN BALSAM. ...
NEW ZEALAND PYGMYWEED. ...
THREE-CORNERED GARLIC. ...
RHODODENDRON PONTICUM. "
I don't know which are actually illegal to grow, but I know that for some of the above it is illegal to allow them to escape.
I grow Nos 2, 5 & 6. My neighbours grow 3, but I immediately scythe any that germinate on my side of the border.
location: Surrey Hills, England, ex-woodland acidic sand. "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
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But nb: from google:
- JAPANESE KNOTWEED. ...
- GIANT HOGWEED. ...
- HIMALYAN BALSAM. ...
- NEW ZEALAND PYGMYWEED. ...
- THREE-CORNERED GARLIC. ...
- RHODODENDRON PONTICUM. "
I don't know which are actually illegal to grow, but I know that for some of the above it is illegal to allow them to escape.I grow Nos 2, 5 & 6. My neighbours grow 3, but I immediately scythe any that germinate on my side of the border.
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."