Grow tree peony from seeds and take care of them

SOWING SEEDS Sow seeds about 1/2 inches below the surface in well-drained soil, keep it moist and away from sunlight. Wait until spring of the following year for the tree peony seeds to germinate and take roots. It takes 4 years after sowing for the new plants to bloom. CARE Below is a comprehensive guide to care for tree peonies in different seasons: SPRING Watering Frequency: Based on the soil condition, tree peonies have fleshy roots, making them very drought-tolerant but susceptible to waterlogging. Ensure well-drained soil, water thoroughly when dry. Watering Time: Water before 10 AM or after 4 PM. Watering at midday results in a significant temperature difference between the water and soil, and midday watering can easily lead to leaf burn or sudden closure of stomata. Avoid watering during the hottest part of the day and the freezing hours of the morning and evening; choosing warmer times of day will protect the root system. Adjustments for Different Growth Stages Budding Stage: Keep the soil slightly moist to promote bud swelling and new shoot growth. Bud Stage: Water requirements increase at this stage, but avoid overwatering to prevent bud drop. Flowering Stage: Control watering appropriately during flowering; too much water will cause flowers to wither prematurely and shorten the flowering period. BEFORE BLOOM: Fertilize late March to early April, approximately 15 to 25 days after the buds emerge but before the flowers open. Primarily phosphorus and potassium fertilizers, once every 10 days twice. Applied by watering along the rim of the pot or around the base of the plant. Supplement with well-rotted organic fertilizers to provide longer-lasting nutrient release. AFTER BLOOM: Promptly Prune Spent Flowers: Once the flowers have completely withered, the very first step is to remove the spent blooms as soon as possible. How to Prune? Make the cut just below the first or second fully developed leaf located beneath the spent flower; simply snip off the flower head along with its stalk. Preserve the Foliage: Remember—do not cut off healthy leaves! The broad, lush leaves are the primary engines of photosynthesis; the nutrients they generate will be continuously transported throughout the plant, accumulating the energy required for next year’s spectacular bloom. Fertilizer Placement (Crucial): Peonies possess fleshy roots; while the main taproot is thick and robust, its nutrient absorption capacity is relatively weak. The actual nutrient-absorbing roots are located at the periphery of the root system. Therefore, never scatter fertilizer directly at the base of the main stem, as this creates a high risk of burning the roots. The correct approach is to dig 3–4 shallow holes near the plant’s “drip line” (the vertical projection of the outermost leaves); bury the fertilizer in these holes, then cover them with soil. Note: After fertilizing, water the plant thoroughly immediately to help the nutrients penetrate the soil. SUMMER Watering Principles: Maintain a “dry-then-wet” watering cycle—wait until the soil surface has dried out before watering thoroughly again. Peonies possess fleshy roots and are extremely susceptible to waterlogging; during the rainy season, pay close attention to drainage and flood prevention, as poor drainage can easily lead to root rot. During periods of high summer heat, avoid watering at noon; instead, choose to water in the early morning or late evening. Lighting and Shading: Peonies are light-loving plants, but they are intolerant of the intense, scorching sun of summer. Strong, direct sunlight can cause the leaves to scorch and wither. For potted peonies, it is recommended to move them to a balcony or under a tree where there is ample diffused light; for garden-planted peonies, if conditions permit, consider installing a shade net to provide appropriate protection from the sun. Summer Dormancy: During the high temperatures of mid-summer, peonies enter a semi-dormant state. Growth slows significantly during this period; therefore, watering should be moderately reduced, and fertilization should be suspended to prevent root burn. Pest and Disease Control: Ensuring adequate ventilation and light penetration around the plant, and promptly remove any fallen leaves or weeds from the surface of the soil to prevent brown spot and gray mold. WINTER In northern regions, from mid-November onwards, the plants begin to enter a dormant or semi-dormant state. When pruning, first remove any withered leaves that haven’t fallen off, then cut off dry, diseased, and weak branches, and finally prune any excessively long branches that affect the plant’s appearance. Watering and Fertilizing In winter, woody(tree)peonies are almost in a state of “not eating or drinking,” and have little need for water. Therefore, it is advisable to water sparingly or not at all. Avoid frequent watering. Fertilize in fall with a slow-release fertilizer, or best if apply organic compost and manure. No fertilizing is needed in winter. Keeping Warm Although tree peonies are cold-hardy, extremely cold and freezing weather can often damage the plants, affecting their growth and flower bud differentiation in the following year. Therefore, it is best to cover them with large black plastic bags or straw after pruning and disinfection.