Mistakes I have probably already made

The growing season hasn't even started properly yet and I have already been making mistakes here there and everywhere.

When trying to spread the manure mulch I knocked the growing tip off the rhubarb - hopefully it will recover but at least I still have many other rhubarb plants scattered around the plot thanks to dividing it up last year (and rescued abandoned bits from the compost heap).

I am also worried that the manure I used was probably too fresh so may burn young plants and roots. Technically I should have let it rot down for 6 months but I wanted to mulch before the weeds started coming and wanted to feed the ground ahead of planting (which will have to take place the weekend of Mother's Day as travel and work will stop any earlier activity on the allotment.

The only planting I did was to sow broad bean seeds (aqua dulce) but I wonder if I didn't plant the seeds deep enough. The RHS magazine 'The Garden' suggests 5cm. I don't think my hoe-created trenches were that deep and I certainly didn't dig in any manure. Oops. Along with the other planned sowing indoors maybe I will sow some extra bean seeds in case this lot fail to take root (they are popular with mice apparently).

Finally I harvested tiny sprigs of broccoli in the raised bed in the garden but I'm now wondering if they weren't the beginning of a Purple Sprouting Broccoli harvest I have cut off in its prime. Left a few on just in case.