The annual Jethart Festival takes place on the first or second Friday in July. The high-point of this two-week celebration is a colourful, two-hundred strong, mounted cavalcade that makes the journey between Jedburgh and Ferniehirst Castle. Led by the Jethart Callant, a young man from the locality, the ride commemorates the recapture of Ferniehirst from the English in 1549. On arrival at Ferniehirst, the riders are welcomed in the name of the Kerr family by Lord Lothian or a Kerr kinsman. A recital of Reprisal, a poem by Walter Laidlaw, is read. The cavalcade then leaves for the Capon Tree, a lone survivor of the once mighty Jed Forest. At a deeply-moving memorial ceremony, The Flowers of the Forest is played by a lone piper.

THE REPRISAL (by Walter Laidlaw)
The Castle, razed from tower to floor
Was built and garrisoned once more;
The Scots and French, led on by Kerr,
Courageous and well-trained to war,
On horse, on foot, from far and near,
With Jethart axe and Border spear,
Responded to the bugle-call;
They storm and scale the outer wall;
Though strong the tower, a breach they made,
Through which the English captain said,
"My noble chief, we mercy crave."
"You'll get the mercy that you gave,"
The chief replied, and forward sprang;
A deadly conflict then began.
So fierce and furious was the shock,
Helmets were cleaved with every stroke;
Above the clang of sword and spear
Was "Forward" heard and "Jethart's Here!"
So well the Kerrs their left-hands ply
The dead and dying round them lie,
The castle gained, the battle won,
Revenge and slaughter are begun.
Now trembling for his cruel deeds
In vain for life the foeman pleads,
But why, my muse, such scenes described?
Peace over all doth now preside.
The days of siege and raids are o'er,
The din of war resounds no more;
No sound except the song of bird
Within the forest glade is heard,
While thistles wave and roses bloom
To guard and deck the warrior's tomb.