Seasonal Tasks

Here's a list of task we do at P. Garden by season. We'll be adding to it but it gives you an idea of what it takes to keep a garden looking good.

Spring
January: Schedule deliver of wood mulch for garden. Spread liberally before slugs arrive.
Agastache: Cut back to basal foliage mound.
Asclepias: Cut back by 1/2 in early spring.
Dahlia imperialis: Cut back to ground. Donate cuttings to fellow gardeners.
Lupinus: Prune by half.
Narcissus (Daffodil): Deadhead

Summer
Ceanothus spp.: Prune branches back to trunk if needed; otherwise only tip back spent blooms.
Chasmanthe: cut back dead foliage to ground.
Rosa spp.: Deadhead.
Salvia - shrubby spp: Deadhead, remove dead growth, and shear very lightly to keep dense. Can also be pruned around perimeter to limit spread. Do not cut into old wood/interior of plant!
Scabiosa, Coreposis, Aloe, Kniphofia, Lathyrus, Agapanthus, Canna, Buddleja, Helichrysum: Deadhead.
Iris: Divide.
Philadelphus: Prune branches that flowered this year to 1/3 of their height. Then prune 1/3 of those to the base. Leave new branches alone - this shrub flowers on 2nd year growth

Fall
Achillea: Cut back dead flower stalks to ground
Artemisia californica (Sagebrush): Cut by 1/2
Athanasia pinnata: Cut back leggy branches to 6" above base.
Eriogonum spp.: Deadhead and prune dead growth in fall; coppicing can renew woody specimen but may kill plant
Mimulus (Monkeyflower): Look for buds of new growth coming out of old wood, do not prune below these.
Narcissus (Daffodil), Amaryllis belladonna (Naked Lady): Plant bulbs, move or divide them now.
Nicotiana grandiflora (Flowering Tobacco): Cut back to 1ft and dig in compost.

Winter
Aster: When they finish flowering, asters go dormant. Cut them down to the ground at this point, leaving a small amount of basal foliage.
Cotinus coggygria: Coppice every other year or prune. Flowers on old wood only.
Crocosmia: Cut back dead foliage to ground.
Lavandula (Lavender): Shear lightly.
Plectranthus argentatus: Shear lightly to increase bushiness.
Romneya coulteri  (Matilija Poppy ): Prune entire plant to 6" tall.
Salvia - shrubby spp. like S. leucantha: Cut down to 6".
Verbena bonariensis: Cut back to ground when flowering is over.
 
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