Add spaces: DaughterofJensNielsenandBirgitteJensdatter

Answer: Daughter of Jens Nielsen and Birgitte Jensdatter
Theseedscanlie15andeven20daysbeforeseemkoreshochek.

The seeds can lie 15 and even 20 days before seem koreshochek.
[Q]: [Thereforejourneyman,holdontothehand,]
[A]: [Therefore journeyman, hold on to the hand,]
Problem: Add spaces: (i)onlythingswhicharetrueandnecessarymaybeincluded;

Spaces added: (i) only things which are true and necessary may be included;
This text is missing some spaces, please add them: Sevenperstem,fiveareadultsbynow.
Seven per stem, five are adults by now.
[Q]: [Thatisofcoursenotsomethingtoboastabout;apersonwhosehumanenessandloveiswell-developedwillneverfeelpride,onlyjoyinbeingofbenefit.]
[A]:
[That is of course not something to boast about; a person whose humaneness and love is well-developed will never feel pride, only joy in being of benefit.]