But O, self-traitor, I do bring
The spider Love, which transubstantiates all,
And can convert manna to gall ;
And that this place may thoroughly be thought
True paradise, I have the serpent brought.
'Twere wholesomer for me that winter did
Benight the glory of this place,
And that a grave frost did forbid
These trees to laugh and mock me to my face ;
But that I may not this disgrace
Endure, nor yet leave loving, Love, let me
Some senseless piece of this place be ;
Make me a mandrake, so I may grow here,
Or a stone fountain weeping out my year.
Hither with crystal phials, lovers, come,
And take my tears, which are love's wine,
Mandragora root was supposed to promote fertility, as well as resembling a human form. 
 
 The imperative ‘make’ emphasises Donne’s desire to escape into nature and maybe to grow there, perhaps to convey his misery and anger
Twickenham Garden