I am going to join in with Dawn’s Festival of Spring which will last for 10 -12 weeks in celebration of this season and share something that is happening in or around my neighbourhood each week.
Spring in the countryside is when the umbellifers appear, first of these are Alexanders or Horse Parsley (Smyrnium olusatrum) which grow on wasteland and hedges, especially in coastal locations. Once grown as a pot herb cultivated for centuries until it was replaced by celery. It was also used as a herbal medicine.
The umbrella-like yellow flower heads open in April, and by July the seeds are beginning to ripen and turn dark brown.
Cornwall in Colours 
At the moment, it is not so Spring-like here, We have had three days of incredibly strong gusty wind, followed by showers today following an overnight frost. It still feels like Winter has dragged its heels.
Best wishes, Pete. x
It’s been sunny here, but still cold.
We have something like this here (in fact I am hoping it is next week’s share). I however refer to it as wild mustard.
We have wild mustard too, but I bet they aren’t the same 😉
From our shared comments so far, I would have to agree with you.
Beautiful against the blue sky
Everything looks better against a blue sky 💙
This plant is new to me. I wonder if it is still used as a herbal remedy.
An unusual, but beautiful choice.
And very much part of the spring landscape around here.
Fascinating, Jude. They were replaced by celery! Are there medicinal uses for celery?
Lots of benefits in eating celery and used in Chinese medicine.
I wasn’t aware of its alternative name. Alexanders are more common at your end than mine but we certainly have them. Quite a few this year in fact.
I have also seen this plant in spring on our hiking trips here in SA (or maybe it is related?) – and never knew what the name was. But horse parsley is quite appropriate I would think.