Harvest plant cuttings in August to avoid missing the opportunity - 7 flowers and shrubs to reproduce now before the summer propagation period ends
August: The Perfect Time for Plant Propagation
August marks the ideal time for propagating a variety of popular shrubs and perennials. This month, as many plants are still in their active growth phase but approaching the slower growth of cooler seasons, offers an excellent opportunity for gardeners to take cuttings and encourage root growth.
Seven plants that can be propagated in August include rosemary, lantana, potentilla, ribes, hydrangeas (various types like lacecap and mophead), lavender, and penstemon. Tender perennials and tropical plants are also suitable for propagation during this period.
When taking cuttings, it's best to select semi-ripe or tender new growth stems. These stems, which are partially matured, are firm but still flexible, making them ideal for root formation. A sharp, clean tool like the Fiskars pruning knife or Okatsune pruners is recommended for snipping and stripping stems.
The process of taking cuttings involves making a cut just below a leaf node, removing lower leaves to reduce moisture loss, and then placing the cutting in a well-draining rooting medium such as a mix of coir or sand with potting soil. To encourage root growth, you can dip the cut end in rooting hormone powder. Maintaining humidity is crucial, so consider covering the cutting with a plastic bag or propagation lid until roots develop. It's best to take cuttings in the morning when plants are more hydrated to reduce wilting.
Lavender, a Mediterranean herb, requires well-drained soil and a warm, bright location. Sage, on the other hand, requires regular pruning to prevent it from going leggy. Forsythia should be planted in soil amended with sand or perlite for improved drainage.
It's important to note that lantana, considered an invasive perennial in several US states, should be propagated with caution. Research should be conducted before taking cuttings to ensure compliance with local regulations.
Ribes, or flowering currants, can be propagated in August for colour in the yard during March, April, and May. Lavender can be propagated by taking cuttings from fresh, silver-green shoots from the outer edges of the plant. Rosemary can be propagated by trimming green, firm stems and dipping the cut base in rooting powder.
Creating a greenhouse-like structure for Forsythia cuttings can improve success rates. This can be achieved by placing the cuttings in a plastic bag.
For those looking to start their propagation journey, Walmart offers live rosemary and potentilla 'Goldfinger' plants for purchase. Happy propagating!
[1] Gardening Know How
[2] The Spruce
[3] Garden Myths
[4] Walmart
[5] The Old Farmer's Almanac
[1] This August, make your home-and-garden lifestyle more vibrant by propagating a diverse assortment of plants such as rosemary, lantana, potentilla, and others.[2] As you take cuttings for propagation, remember to use the right tools like the Fiskars pruning knife or Okatsune pruners, and always maintain humidity during the rooting process.
