When you observe that the color of the leaves or flowers of dahlia begins to fade, take it out of the pot, do it gently and carefully, remove the branches that support the stems and flowers, and then Cut off the above-ground part, all from near the ground, leaving only 3--5 cm of foundation piles.
Sterilize the sharp knife, and then use it to cut off a quarter of the pot soil. Then plant the dahlia back into the pot and fill it with culture soil made of leaf mold soil, pond mud and clean fine river sand. The proportion It's 6:3:1, be sure to mix evenly.
After changing the potting soil, it needs to be moved to a cool and ventilated place. Remember to keep the soil moist during maintenance. After about 10-15 days, new shoots will sprout on the foundation pile.
When the new sprouts grow to about 3-4 cm high, they should be placed in a sunny place, and then the sprouts should be thinned. Only two strong new sprouts should be kept on each foundation pile, and the rest should be removed. There are about 6-8 new shoots left in the pot.
Pour clean water every 3 to 5 days to provide sufficient water. In addition, the water must not be missing to provide nutrients. Therefore, you can spray 800 times the GAOMISH organic humic acid active liquid fertilizer solution specifically for flowers on the leaves every half a month or so until there is water dripping on the leaves.
