There is nothing like the first hot days of spring when the gardener stops wondering if it’s too soon to plant the dahlias and starts wondering if it’s too late.
The Essential Earthman by Henry Mitchell (1981).
Late spring planting
The cool start to spring may have lulled you into a false sense of security when it comes to planting trees and shrubs but the warmer days this week should be warning that it is getting late in the season. If you are still planting, make sure you plunge the plant, pot or bag and all into a bucket of water. Either hold it down until the bubbles stop rising or leave it sitting in the bucket for 20 minutes or more. This makes sure that the root ball is saturated before planting. Just watering on top won’t penetrate if the plant is already dry. The water will just run straight through and not be absorbed. After planting, water again and get up to 10cm of mulch laid on top to stop the soils from drying out too quickly.