The Big Bang Theory: Season 4, Episode 20

The Herb Garden Germination (7 Apr. 2011)

TV Episode  -   -  Comedy
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Sheldon and Amy secretly experiment on the gang by spreading rumors. Howard and Bernadette's relationship reaches an important milestone.



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Episode complete credited cast:
Penny (as Kaley Cuoco)
Brian Greene ...
Brian Greene


Starting with Penny to Amy, a rumor quickly spreads amongst Leonard, Sheldon, Raj and Priya that Bernadette is planning on breaking up with Howard. This rumor is especially of interest to Raj since despite being Howard's best friend, he has always been in love with Bernadette himself. Additional news comes to light directly from Howard, who is planning on asking Bernadette to marry him. Based on the rumor, the rest of gang believe that Howard is in for a major let-down, much to Raj's excitement. But will Howard go through with his plan and if he does, will the rumor prove to be true? Meanwhile, Amy and Sheldon, watching the speed with which the rumor has spread, propose another social science experiment of starting two rumors - one of a salacious nature, and one more mundane - to see how quickly both spread amongst the group. Written by Huggo

Plot Summary | Plot Synopsis







Release Date:

7 April 2011 (USA)  »

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Aspect Ratio:

16:9 HD
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Did You Know?


The title refers to one of the control rumors started by Amy and Sheldon. See more »


When Leonard is cleaning the bathroom mirror, the height at which he holds the squeegee changes between shots. Also, the toothpaste on his lips disappears in one shot then reappears in the next. See more »


[first lines]
Brian Greene: My new book, 'The Hidden Reality', takes on a grand question: Is *our* universe the only universe? You see, there's a growing belief among scientists like me that ours may only be one among many universes populating a gigantic cosmos. In 'The Hidden Reality' I explore this possibility without presuming any knowledge of mathematics or physics on the part of the reader.
Sheldon: [to Amy] Hysterical.
Amy: [to Sheldon] I'm glad you talked me into this. We work so hard sometimes it's nice to goof off ...
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Big Bang Theory Theme
Composed by Barenaked Ladies
Performed by Barenaked Ladies
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User Reviews

Gossip abounds on "The Herb Garden Germination" ep of "The Big Bang Theory"
14 November 2011 | by (Baton Rouge, La.) – See all my reviews

In a nutshell about this last season ep of "The Big Bang Theory": Sheldon and Amy decide to spread some gossip to test a theory. So they talk about Bernadette breaking up with Howard. Only the last two are unaware about what's being talked about. When Raj hears about it, he's thrilled but tells his friends it's his "smile of sadness". But Howard has other plans...One of the best eps that came from the previous season of "TBBT". Also one of the most touching. Amy and Sheldon were really on fire this time. Raj is particularly hilarious here. And I loved seeing Penny's reactions. I think that's all I'll comment on this particular edition.

6 of 6 people found this review helpful.  Was this review helpful to you?

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