Hi there, I have a question about a plant that used to pop up in my backyard every year in northern California. Its a tall stalk, that can easily grow 10-15 feet in the spring and summer and it has very large broad leaves like a pumpkin plant. The stalk typically has a hollow middle but as it grows tall enough it fills out and becomes very solid, but very light. Almost reminiscent of bamboo, it just doesn't have such a shiny finish.

Any ideas what this plant might be? We always referred to it as "the pumpkin tree." I am eager to know, thanks for your time.

@corythomas42. I don't have a clue what plant that would have been but hopefully someone will chime in with an answer.

It's difficult without a picture but I'll take a stab at this with Macleaya cordata. If this isn't it, can you tell us how it differs as that may help narrow it down.

Could it be a Castor Bean plant?

Sounds like Giant Ragweed to me.

I think it sounds like Japanese Knotweed. Google it and look at photos, see what you think. Here is a link for ID:

http://japaneseknotweed.com/ja...

porkpal said:Sounds like Giant Ragweed to me.

That's what I was thinking porkpal. Ambrosia trifida.

For comparison giant ragweed Giant Ragweed (Ambrosia trifida)

I wonder how the stuff ever got the name "ambrosia"!

https://thecontraryfarmer.word...

Thanks, Jean! Now I can't wait for our Giant Rag Weed to go to seed so I can sample some - NOT.

You are most welcome. I may look into Giant Ragweed as an alternative food source for my ever-hungry grown grandsons.

Hi & welcome!

It sounds like Paulownia to me:
Empress Tree (Paulownia tomentosa)

Hi corythomas42, and welcome to ATP / NGA! Your screen name caught my eye since I'm Richard Thomas Corey.

Your question sure fired up our curiosity!

If none of these suggestions were close matches, is there a practical way for you to take a digital photo and copy it to your PC? After that, it's quite easy to add that photo to your post. While typing the message, click "Upload an image", browse to the location where you saved it on your PC, and wait a few seconds.

My guess is that would get a firm ID very quickly.

Someone is going to get it right. And without a picture no less! You guys are goooooood!