The most common and most likely answer to this crossword clue is the 4 letter word PIPS
I've seen this crossword clue in The Daily Telegraph
P
I
P
S
More clues leading to the result PIPS
Buddy explains!

The straight part
We know that "seeds" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case seeds = pips.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PIPS mean?
PIPS noun- Any of various respiratory diseases in birds, especially infectious coryza.
- Of humans, a disease, malaise or depression.
- A pippin, seed of any kind.
- Something or someone excellent, of high quality.
- (WW I, signalese) P in RAF phonetic alphabet.
- One of the spots or symbols on a playing card, domino, die, etc.
- (public service) One of the stars worn on the shoulder of a uniform to denote rank, e.g. of a soldier or a fireman.
- A spot; a speck.
- A spot of light or an inverted V indicative of a return of radar waves reflected from an object; a blip.
- A piece of rhizome with a dormant shoot of the lily of the valley plant, used for propagation
- One of a series of very short, electronically produced tones, used, for example, to count down the final few seconds before a given time or to indicate that a caller using a payphone needs to make further payment if he is to continue his call.
- (currency trading) The smallest price increment between two currencies in foreign exchange (forex) trading.