Penstemon 'Alice Hindley'. Pull off all leaves except the top 2 or 4 of your short cutting. If the pot sits in water, the soil will be too wet and the cuttings will rot. Some of the other problems encountered include frost damage and powdery mildew. See the RHS Penstemon Grower Guide for more cultivation advice. My Garden/Allotment. Les plants de cette lignée ont des hampes florales de 45 à 50 cm de hauteur (distance de plantation 35 cm) et portent une multitude de fleurs … Select soft growth without a flower. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected :o) 5 Jul, 2009 . Allow 45cm (18in) between plants. Along with some other gardening people here I took some Penstemon cuttings last Autumn, popped them into a jar of water, some took root, others didn't survive. Plants are more liable to die out in winter where the soil is heavy and not free draining. A scar tissue is formed which seals the end of the cutting. The water ones have rooted and the soil ones look sad. Carefully cut just below the node with a clean sharp knife or scissors. For optimal growth, make sure to keep the leaves above the waterline with only the stem immersed. Water is not a good medium to root most cuttings in because an adequate amount of oxygen can't reach developing roots. The growing tip is the actively growing part of the stem. If you girdle the branch a month prior to taking the cutting, it allows the auxins to build up and you don't even need any rooting hormone. Gardening Chat. Here's a picture of the African Violet which has three crowns and really needed to be re-potted. into holes made with a pencil, taking care not to crowd them too closely. Penstemon cuttings. A surprising number of cuttings will root that way. Not all cutting that will root in water have root nodes, but most of them do so find the root node on your plant. You may wish to change out the water periodically, but I rarely do, if it gets to that point, I just plant them in soil. 222879/SC038262, Trim them once the hard, winter weather is over (usually in late April or early May); until then old stems provide valuable frost protection for the new shoots, In spring, when new shoots appear at the base, remove the old flower spikes and any suitable material can be used as cuttings, In autumn, limit windrock and tidy up borders by cutting back penstemon by about a third, being sure to leave enough foliage to provide winter protection, In mid-spring, check plants for new shoots at the base or along the stems, Where shoots are growing from the base, cut out all the old stems close to the bottom, Penstemon with few or no shoots growing from ground level should only have their stems shortened, making the cuts just above the lowest set of healthy leaves, Once a plant has been pruned, remove weeds and other encroaching plants, Take non-flowering tip cuttings of about 10-12.5cm (4-5in) long and trim with a sharp knife to just below a leaf node, Gently remove the bottom two leaves and trim the top and side leaves by up to one-third to reduce leaf surface area and, in turn, moisture loss, Dip the cut ends in hormone rooting powder and insert in a 50:50 mixture of compost and perlite, Up to five cuttings can be inserted into a 9cm (3.5in) pot, or modular trays can be used for larger quantities, After rooting, they can be left undisturbed over winter or individually potted on. Place the jar in bright, indirect sunlight. Fill a watering can with fresh, clean water and slowly pour it onto the potting mix. With luck, the cuttings … Penstemons root well taken from nodal cuttings, as opposed to internodal. Penstemons are easily propagated from seed sown in early spring in heated conditions and planted out in early summer. You'll get a sturdier root system if you use another rooting medium. Taking nodal cuttings helps the stem tissue heal at a faster rate. Supplies: 4-5" cut stems from most any plant, especially with square or sturdy stems . Place the cutting in a clean glass. Pot the cuttings up in gritty compost once they root. 020 3176 5800 Snip off cuttings from Penstemon stems that aren’t bearing flowers. my african violets all seem to root better in water than perlite or soil!
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