Table of Contents
Delphiniums are stunning perennial flowers known for their tall spikes and vibrant colors. Proper care is essential to ensure they thrive year after year. Creating a monthly care calendar helps gardeners stay on top of tasks that promote healthy growth and abundant blooms.
January
In January, focus on planning your delphinium garden. Order seeds or young plants early to ensure availability. Keep an eye on your garden tools and prepare any necessary supplies for the upcoming planting season.
February
February is a good time to start delphinium seeds indoors if you live in a region with cold winters. Use seed-starting trays and keep the soil moist. Ensure your grow lights are properly set up for healthy germination.
March
As the weather begins to warm, transplant seedlings into larger pots or prepare outdoor beds. Choose a sunny location with well-drained soil. Incorporate compost to enrich the planting area.
April
Plant your delphinium outdoors once the risk of frost has passed. Space plants about 1 to 2 feet apart. Water thoroughly after planting and mulch to retain moisture and suppress weeds.
May
Maintain consistent watering, especially during dry spells. Fertilize with a balanced, slow-release fertilizer to encourage strong growth. Stake tall varieties to prevent toppling.
June
June is prime blooming season for delphiniums. Deadhead spent flowers to promote continued blooming. Watch for pests like aphids and treat as necessary. Keep the soil evenly moist.
July
Continue deadheading to prolong the flowering period. Be vigilant about watering during hot, dry weather. Apply a layer of mulch to retain soil moisture and keep roots cool.
August
As summer wanes, prune back any faded flower stalks. Prepare for the cooler months by applying a light mulch around the base of the plants. Keep watering during dry spells.
September
In September, cut back delphiniums to about 2 inches above the ground once the foliage begins to yellow. Divide overcrowded clumps to promote healthy new growth in spring.
October
Prepare your garden for winter by applying a protective mulch layer. Remove any remaining dead foliage to prevent disease. Consider planting new delphinium varieties indoors for spring planting.
November
November is a quiet month; focus on garden cleanup and tool maintenance. Store any potted delphiniums indoors if they are container-grown. Plan for next year’s garden layout.
December
In December, review your gardening successes and challenges. Order new seeds or plants for the upcoming season. Keep an eye on weather forecasts to protect overwintering plants from harsh conditions.